Term
| How many stars exist in the solar system? |
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Definition
|
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Term
Which object is not a member of the solar system?
-comet haley
-I0 (satellite of jupiter)
-Proxima Centauri
-433 Eros (asteroid between earth & mars orbit) |
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Definition
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Term
| The solar system is about _____ as old as the universe itself |
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Definition
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Term
| The nearest star to the planey Neptune is |
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Definition
|
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Term
| Planets are different from stars in that planets... |
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Definition
| are composed mostly of liquid and solid materials. |
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Term
| The most massive object in the Solar System is ____. This object is a _____ |
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Definition
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Term
| What planet has a solid surface most affected by the greenhouse effect? |
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Definition
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Term
| What planet does not appear to have a solid surface? |
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Definition
|
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Term
| The diameter of the sun is approximatly ____ the diameter of Earth |
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Definition
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|
Term
| How far does light travel in 10 seconds? |
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Definition
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Term
| If the sun is reduced to the size of a ping pong ball (and all other sizes scaled down proportionatly) then the distance to the sun's nearest neighbor star is about. |
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Definition
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Term
| A light year could also be expressed in terms of what other units? |
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Definition
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Term
| What shape most closely resembles the shape of our Milky Way Galaxy |
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Definition
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Term
| The solar neighborhood is defined as |
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Definition
| the region of space in our galaxy including the nearest few tens of thousands of stars |
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Term
| which statement below about the motion of the Solar System in the Galaxy is correct? |
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Definition
| The solar system is moving outward from the center of the Galaxy aling a spiral path. |
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Term
| If the solar system is reduced in size such that the orbit of neptune is about the diameter of a ping pong ball, then the diameter of the milky way galaxy would be about the size of |
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Definition
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Term
| The Milky Way Galaxy is apart of what larger system of material? |
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Definition
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Term
| The virgo cluster belongs to what larger system of material |
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Definition
|
|
Term
| which astronomical systems of matter are listed below in order of increasing size? |
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Definition
| Solar Neighborhood, Milky Way Galaxy, Local Group, Local Supercluster |
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Term
| Imagine a sudden astronomical event, that actually occurred about the time of the birth of Christ. If this even is observed int he present epoch, then we can conclude that the event occurred at a distance of about ______ from Earth. |
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Definition
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Term
| If the entire history of the universe collapsed into one year, about when did the solar system form? |
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Definition
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Term
| As seen in Lexington, the north celestial pole appears about where in the sky? |
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Definition
| about 40 degrees above the north horizon point |
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Term
| Imagine a time exposure photograph of the sky in which each star left a trail. Each trail is an arc of about 90 degrees. In this case, the exposure time of the photograph is about |
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Definition
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Term
| If the sky is represented as a sphere, what fraction of the sphere is above the horizon (in a flat location?) |
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Definition
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Term
| the celestial sphere appears to rotate 360 degrees in |
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Definition
|
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Term
| suppose you observe that the south celestial pole is straight overhead, where are you on earth? |
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Definition
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Term
| The city of Melbourne, Austrailia has a lattitude of 38 degrees south. Where in the skies of Melbourne would find the south celestial pole? |
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Definition
| 38 degrees about the south point of the horizon |
|
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Term
| where on earth do both the north and the south celestial poles lie on the horizon? |
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Definition
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Term
| which object is not a wandering star identified by the ancients? |
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Definition
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Term
| From the perspective of ancient astronomers, an example of a fixed star is _____ an example of a "wandering" star is ____ |
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Definition
| Proxima Centauri, The Sun |
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Term
| THe sun is seen in the constellation Libra in October and in Scorpio in November. Why the change? |
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Definition
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|
Term
| The path traced out by the sun in the sky over the course of a full year is called the _____ |
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Definition
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Term
| The sun appears to move____ degree(s)____ in 24 hours as a result of Earth's rotation. |
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Definition
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Term
| The sun appears to move ___degree(s)____ in 24 hours a sa resutl of Earth orbital motion. |
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Definition
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Term
| Constellations of the zodiac (of astrological importance) are different from other constellations in the sky in that zodiac constellations |
|
Definition
|
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Term
| the dates f the year associated with the sun signs of astrology are different now from what they were in the ancient times. This change is the result of the |
|
Definition
| wobbling of the earths rotational axis |
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Term
| Owing to its annual apparent motion, about how long does the sun take to "move" from one constellation to the next? |
|
Definition
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|
Term
| As a traveler moves north in the northern hemisphere |
|
Definition
| the north celestial pole (NCP) rises higher about the horizon |
|
|
Term
| the angle of the north celestial pole above the horizon was known by ancient astronomers to change as a traveler moved north or south. The information was used by ancient astronomers to infer |
|
Definition
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Term
| What astronomical phenomenon is caused by the shadow of the earth? |
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Definition
|
|
Term
| imagine using Eratosthenes method of estimating the size of the earth based upon two cities along a north-south line. Suppose the sun angle at high noon is 36 degrees different between two cities located 3000 units apart. In this case, the estimated diameter of the Earth is about ____ units |
|
Definition
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Term
| suppose eratosthenes has been mistaken about the distance between alexandria and syene. in particular suppose he mistakenly thought the two cities were twice as far apart as they actually are In this case, his estimate of the diameter of earth would have been |
|
Definition
| two times larger then the correct value |
|
|
Term
| in modern times, the occasional retrograde motion of mars and other planets is explained by the fact that mars |
|
Definition
| moves more slowly in its orbit than earth |
|
|
Term
| aproximatly how often does the planet jupiter exhibit retrograde motion? |
|
Definition
|
|
Term
| in the ancient times, the retrograde motion of mars and other planets was explained by the fact that Mars |
|
Definition
| moves on a small circle called an epicycle |
|
|
Term
| according to the solar system model of ptolemy, which objects take exactly the same time to go around the earth as does the sun? |
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Definition
|
|
Term
| according to Ptolemy, the ____ is at the center of the solar system, and the ____ is the closest celestial neighborhood to the earth |
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Definition
|
|
Term
| in what period did Copernicus publish his book describing a sun-centered Solar system? |
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Definition
|
|
Term
| an important (and physically correct) objection raised by the contemporaries of Copernicus regarding his model of the solar system was that |
|
Definition
| nearer stars should shift positions relative to more distant stars if the earth moved about the sun |
|
|
Term
| Ptolemy's model of the solar system is a(n) _____ model, while Copernicus's model is a(n) _____ model |
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Definition
|
|
Term
| what was the significance of Galileos observations of the satellites of Jupiter? |
|
Definition
| The observations established that some objects in the solar system do not orbit the earth. |
|
|
Term
| why (according to the model of Copernicus) does Venus always appear close to the Sun in the sky? |
|
Definition
| it is closer to the sun than the earth |
|
|
Term
| why were the phases of venus not used as an argument against the Solar System model of Ptolemy prior to the time of Galileo? |
|
Definition
| the phases of Venus could not be observed prior to galileo |
|
|
Term
| Careful study of the phases of venus establishes that |
|
Definition
|
|
Term
| What was the principal contribution of Tycho Brahe to the Copernican Revolution? |
|
Definition
| He measured the positions of the planets relative to the background stars |
|
|
Term
| which scientist made use of the astronomical records kept by Brahe to infer important new information about the solar system? |
|
Definition
|
|
Term
| what astronomical instruments did Tycho Brahe construct |
|
Definition
| mechanical models of the celestial sphere that predicted future positions of planets relative to the constellations |
|
|
Term
| what is the significance of Kepler's discovery regarding the shapes of the planetary orbits? |
|
Definition
| they are not circles, or combinations of circles |
|
|
Term
| the average distance between a planet and the sun is the _____ of the planets orbit. |
|
Definition
|
|
Term
| according to keplers 1st law, one focus of a planeys orbits is the location of ____ while the other focus is the location of ______ |
|
Definition
|
|
Term
| in general, an ellipse has____ special point(s) within it. These points lie____ |
|
Definition
|
|
Term
| in general, an ellipse has____ special point(s) within it. These points lie____ |
|
Definition
|
|
Term
| what is the significance of Kepler's second law of planetarymotion (equal areas law)? |
|
Definition
| A given planet moves faster in its orbit when it is closer to the sun. |
|
|
Term
| the longest dimension across the orbit of the earth is |
|
Definition
|
|
Term
| what is the significance of Keplers 3rd Law (Psquared=acubed) |
|
Definition
| planets closer to the sun take less time to orbit the sun than planeys further from the sun |
|
|
Term
| according to Keplers 3rd law, which planet has the longest period? |
|
Definition
| Jupiter (farthest from the sun) |
|
|
Term
| which example below illustrates uniform motion? |
|
Definition
| Marathon runner moving along a straight path at a constant speed. |
|
|
Term
| which object is acted upon by no net force? |
|
Definition
| elevator moving down the elevator shaft at a constant speed |
|
|
Term
| An appropriate unit of acceleration is ___, an appropriate unit of force is ____ |
|
Definition
| meters per sec per sec, newtons |
|
|
Term
| consider a train moving along a straight track at a constant speed. What can you conclude about this train? |
|
Definition
| the net force acting upon the train is zero. |
|
|
Term
| what controls on an automobile can create an acceleration of the vehicle? |
|
Definition
| accelerator, brake and steering wheel. |
|
|
Term
| Suppose an object is falling downward under the acceleration of earths gravity. If it is moving at 90 m/s at one moment how fast is it moving 5 second later |
|
Definition
|
|
Term
| consider the 4 forces acting upon the train. What force is directed vertically upward? |
|
Definition
| the force of the rail on the train |
|
|
Term
| imagine the same force acting upon the two objects 1 & 2. Object 2 has twice the mass of object 1. In this case, the acceleration of object 2 will be ____ as that oject 1. |
|
Definition
|
|
Term
| Imagine that a force of ____ newtons acts upon an object having a mass of ____ kilograms. For which case wil the resulting acceleration be highest? |
|
Definition
|
|
Term
| According to Newotons 3rd law of motion, the force pushing you ahead as you dash of down a sidewalk is |
|
Definition
| the force of the sidewalk upon you |
|
|
Term
| suppose a force of 20 newtons us applied to an object having a mass of 4 kg. What is the acceleration? |
|
Definition
|
|
Term
| Imagine an object moving in a circle at a constant speed. In this case, we can conclude that |
|
Definition
| there is a net force acting on the object perpendicular to its motion |
|
|
Term
| the weight of an object is defined as the _____. An appropriate unit for weight is the |
|
Definition
| Gravitational force acting upon the object, newton. |
|
|
Term
| Your mass on the moon would be ____ your mass on earth. Your weight on the moon would be ____ your weight on Earth. |
|
Definition
|
|
Term
| What quantities determine the gravitational force between two objects? |
|
Definition
| Masses, distance between their centers |
|
|
Term
| "weightlessnss" occurs for an object when it is |
|
Definition
| only subject to the gravitational force |
|
|
Term
| a pound of bread on the moon would contain____ as a pound of bread on the earth. |
|
Definition
|
|
Term
| If the distance between two objects increases 3 times (with the masses remaining the same) the gravitational force between them will |
|
Definition
|
|
Term
| the gravitational force that the earth exerts upon the sun is ____ the force that the sun exerts upon the earth |
|
Definition
|
|
Term
| the acceleration a 10 kg object experiences when dropped is ____ the acceleration of a 1000 kg object. |
|
Definition
|
|
Term
| if the masses of two objects are each trippled (and all other conditions remain the same) the gravitational force between them will |
|
Definition
|
|
Term
| which person experiences weightlessness |
|
Definition
| olympic diver who has just left the springboard |
|
|
Term
| approximatly what day of the year in lexington has the greatest number of hours of sunlight? |
|
Definition
|
|
Term
| approximatly what day of the year in Sydney, Austrailia has the fewest number of hours of sunlight? |
|
Definition
|
|
Term
| the earth is closest to the sun in early january of each year. What is the significance of this fact to the seasons on Earth? |
|
Definition
| this fact has very little relevance to seasons on earth |
|
|
Term
| the spring equinox in melbourne, Austrailia occurs on about what date? |
|
Definition
|
|
Term
| on about what day in lexington would the Sun rise furthest south of east? |
|
Definition
|
|
Term
| On about what day in Melbourne,Austrailia would be the SUn be highest in the sky at high noon? |
|
Definition
|
|
Term
| If the earths rotational axis were perpendicular to its orbit, then |
|
Definition
| polar regions on the earth would experience about 12 hours of sunlight per day on any day of the year but still colder than equatorial regions. |
|
|
Term
| Point barrow, Alaska is north of the arctic circle. About how many hours of sunlight does Point Barrow experience in late December. |
|
Definition
|
|
Term
| How do celestial objects move in the sky over 24 hours as seen from the Earths North Pole? |
|
Definition
| they trace out circles around the sky at constant angles above the horizon |
|
|
Term
| the cause of the seasons on Earth is |
|
Definition
| the 23.5 tilt of the earths axis relative to its orbit |
|
|
Term
| at the earths South Pole where will the sun be in late June? |
|
Definition
| about 23 degrees below the horizon |
|
|
Term
| shortly after the new moon, the phase of the moon is said to be |
|
Definition
|
|
Term
| suppose the moon is new on about November 1. In this case, we expect the third quarter moon to be visible on about |
|
Definition
|
|
Term
| At any given momment,____ of the surface of the moon is illuminated. This illuminated part is of the moons surfaces faces the _____ |
|
Definition
|
|
Term
| What fraction of the illuminated surface of the moon faces the earth? |
|
Definition
| the answer is different depending on the phase of the moon |
|
|
Term
| What is the effect of the earths shadow upon the lunar phases? |
|
Definition
|
|
Term
| if the moon sets at sunset, what is the phase of the moon? |
|
Definition
|
|
Term
| imagine that you observe a third quarter moon this evening in Lexington. What phase of the moon would be observed at the same time in Santiago, Chile? |
|
Definition
|
|
Term
| the sea of showers is a prominent dark region on the surface of the Moon. The region always faces the Earth, regardless of the position of the Moon in its orbit about the Earth. Why does the Sea of Showers always face the Eart? |
|
Definition
| The moon rotates on its axis in the same time it revolves around the Earth |
|
|
Term
| Imagine living on the Moon. How long would a full cycles of phases of the Earth take to complete? |
|
Definition
|
|
Term
| about how long is the sun above the horizon as seen on the far side of the Moon |
|
Definition
|
|
Term
| Does some hemisphere of the moon always face the earth as the moon orbits the earth? |
|
Definition
|
|
Term
| So does the moon rotate on its axis at all? |
|
Definition
| yes, to keep the same face pointed at Earth, moon must rotate exactly once with every orbit (once in 29.5 days)... this effect is called Synchronous Rotation |
|
|
Term
| the concequence of synchronous rotation |
|
Definition
| earth remains motionless in the lunar sky |
|
|
Term
| How long is one day on the moon? |
|
Definition
|
|
Term
| Is the far side of the moon always dark? |
|
Definition
| no it is completely dark only at a full moon |
|
|
Term
|
Definition
| where the sunlight is completely blocked |
|
|
Term
|
Definition
| where the sunlight is partially blocked |
|
|
Term
|
Definition
| earth is in the shadow of the moon. the shadow of the moon sweeps across the earth, and the sunlight is blocked. |
|
|
Term
|
Definition
| moon falls into the earths shadow. The moon sweeps through the shadow of the earth. |
|
|
Term
| Coincidences between the moon and the sun |
|
Definition
the sun is 400 times bigger then the moon and also 400 times farther away.
the moon is barely large enough in the sky to completely cover the sun during a total solar eclipse |
|
|
Term
| when a observer can only see a partial solar eclipse they are.. |
|
Definition
|
|
Term
| At what lunar phase is the far side of the moon fully illuminated by the sun? |
|
Definition
|
|
Term
| What phase of the moon is required for a solar eclipse? |
|
Definition
|
|
Term
| What properties of the sun & moon lead to unusually spectacular eclipses of the sun? |
|
Definition
| the sun and the moon appear the same size in the sky |
|
|
Term
| Why is a totally eclipsed moon not completely dark? |
|
Definition
| earths atmosphere bends(refracts) sunlight into its umbra, so umbra is not completely dark |
|
|
Term
| From where on earth is a total lunar eclipse visible? |
|
Definition
| anywhere on the hemisphere facing the moon! |
|
|
Term
| why do we not have eclipses every month? |
|
Definition
| moons orbit tilted 5 degrees to earths so proper alighnment does not usually occur. |
|
|
Term
|
Definition
| gaseous, diameter is 100xearth, is 99.8% of the mass of the solar system |
|
|
Term
|
Definition
| much smaller than the sun, less massive than the sun, mostly solid & liquid composition (colder) |
|
|
Term
|
Definition
| Largest Planet, sun has 10x diameter, sun has 1000x mass |
|
|
Term
| Smaller Objects in the solar system |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| is an icy nucleus (dirty iceball), tail faces away from the sun |
|
|
Term
|
Definition
asteroid:range in size of rocks to boulders
meteroids:out in space
meteorite: after its hit earth |
|
|
Term
| Which object is not in the solar system? |
|
Definition
|
|
Term
| when a small piece of space debris hits earth it is a |
|
Definition
|
|
Term
| what is not true about the planets |
|
Definition
|
|
Term
| motions of the solar system |
|
Definition
| motions of satellites exhibit many regularities, not required by laws of physics |
|
|
Term
| how are motions of the planets similar? |
|
Definition
revolution
-they all orbit in the same direction
-they orbit in nearly the same plane
-nearly circular orbits |
|
|
Term
| most planets have roation_____ nearly____ to their orbits |
|
Definition
|
|
Term
|
Definition
| a measure of resistance of an object being put into motion |
|
|
Term
|
Definition
|
|
Term
|
Definition
| a measure of space occupied by an object |
|
|
Term
|
Definition
|
|
Term
| what is a large object with a small mass? |
|
Definition
|
|
Term
| what is a small object with a large mass |
|
Definition
|
|
Term
|
Definition
| a measure of amount of mass contained in a unit volume |
|
|
Term
| Joviah vs. Terrestrial planets |
|
Definition
| inner and outer planets are quite different in properties |
|
|
Term
| inner(terrestrial) planets |
|
Definition
| mercury, venus,earth, and mars |
|
|
Term
|
Definition
| jupiter, saturn, uranus, and neptune |
|
|
Term
| how are inner and outer planets compare in diameter, mass, avg density, and rotation period. |
|
Definition
diameter=outer is bigger
mass=joviah is bigger
avg. density=inner is bigger
rotation period=inner is longer |
|
|
Term
| when a lunar eclipse is seen on the earth, what is the phase of the earth as seen on the moon? |
|
Definition
|
|
Term
| when the earth views a solar eclipse what is the phase of the earth as seen from the moon? |
|
Definition
| full moon, total eclipse of the sun. |
|
|
Term
|
Definition
| change solid surfaces of planets and satellites over time |
|
|
Term
| 4 main types of geological processes |
|
Definition
1.volcanism
2.erosion
3.impact cratering
4.tectonics |
|
|
Term
|
Definition
| outflow of molten material onto the surface |
|
|
Term
|
Definition
| large scale movement or deformation of the outer layers |
|
|
Term
|
Definition
| wearing away or buidling up of surface by wind, water, and glaciers. |
|
|
Term
| what characteristic of the motions of planets is not required by the basic laws of physics? |
|
Definition
| planets all orbit the sun in the same direction |
|
|
Term
| how would you calculate the average density of a planet? |
|
Definition
|
|
Term
| what planet has the lowest average density? |
|
Definition
|
|
Term
| during a total lunar eclipse observed on earth.. |
|
Definition
| an eclipse of the sun is viewed on the moon |
|
|
Term
| which solar system object is much affected by erosion? |
|
Definition
|
|
Term
| which solar system object is little affected by erosion? |
|
Definition
|
|
Term
| geological age of a solid surface |
|
Definition
| on a planet or satellite, the geological age may vary significantly with location ex) on earth |
|
|
Term
|
Definition
| radiosotopic dating of rocks |
|
|
Term
| crater counting on a surface |
|
Definition
| assume impacts have occurred throughout history of the solar system. Approx. age can be determined by number of craters. |
|
|
Term
| which regions of the moon are younger and older |
|
Definition
lunar seas: younger
lunar highlands:older |
|
|
Term
| what object in a solar system has a geologically old surface? |
|
Definition
|
|
Term
| what object in the solar system has a geologically young surface? |
|
Definition
|
|
Term
| what part of the earths surface is geologically youngest? |
|
Definition
|
|
Term
| what part of the moons surface is geologically oldest |
|
Definition
| the heavily cratered lunar highlands |
|
|
Term
| what planet or satellite has a solid, very geologically young surface? |
|
Definition
|
|
Term
| why is the surface of the earth so geologically young compared to that of the moon & mercury? |
|
Definition
| volcanically active, erosion, and tectonics |
|
|
Term
| internal heat in planets and satellites |
|
Definition
| does not come from the sun, but from 3 other sources. |
|
|
Term
| 3 sources of internal heat |
|
Definition
accretion
differentiation
radioactive decay |
|
|
Term
|
Definition
| planets and satellites formed by the falling together of smaller object:generates heat |
|
|
Term
|
Definition
| shortly after formation, denser, materials, settled towards center:generates heat |
|
|
Term
|
Definition
|
|
Term
| because of three heating processes, planets, and satellites were very hot right after formation |
|
Definition
| with time heat flows out of planets and satellites and they cool off. |
|
|
Term
| which process has not contributed to the internal heat of the earth? |
|
Definition
| solar radiation falling on earth |
|
|
Term
| what solar system object below is likely to have cooled of soonest? |
|
Definition
|
|
Term
| which solar system object is least likely to have active volcanism at present? |
|
Definition
|
|
Term
| how do we know about earths interior? |
|
Definition
| not so much from drilling into earth but by the study of seismic waves. |
|
|
Term
| what does the study of seismic waves reveals |
|
Definition
how densities vary in the interior
whether regions in the interior are solid or liquid |
|
|
Term
| the core of planets and satellites |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| outermost rigid, different from mantle.. as an object cools the lithosphere thickens. |
|
|
Term
| where in the earth are seismic waves created? |
|
Definition
| very close to the surface |
|
|
Term
| what region of the earths interior is densest? |
|
Definition
|
|
Term
| the lithosphere of the earth consists of... |
|
Definition
| the crust and the upper mantle only |
|
|
Term
| results of plate tectonics |
|
Definition
| mountain chains, many landforms. |
|
|
Term
|
Definition
| build mountains, convergent plate boundaries. |
|
|
Term
|
Definition
| mid-ocean ridges (mid-atlantic ridge) volcanic process |
|
|
Term
| what plate tectonics process is ocurring along the western coast of s. america? |
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Definition
| two plates coming together (converging) |
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Term
| what plate tectonics process is occuring along the mid-atlantic ridge? |
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Definition
| two plates are moving apart (diverging) |
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Term
| what process causes plates of the earths lithosphere to slowly move? |
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Definition
| motions of the material in the earths mantle. |
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Term
| changes in earth from plate tectonics |
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Definition
| arr. of continents has changed dramatically (pangea) |
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Term
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Definition
| caused by plate tectonics, volcanic mountains, volcanic plains. |
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Term
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Definition
| erosion occurs vigorously from wind, water, and glaciers.wears away surface |
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Term
| impact cratering on earth |
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Definition
| the vast majority of craters have been erased by tectonics & erosion (150 known on earth) |
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Term
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Definition
two types of terrain
highlands and lowlands(seas) |
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Term
| which type of terrain is older? |
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Definition
| the highlands because they are heavily cratered |
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Term
| how are the earth and the moon alike? |
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Definition
| they both have highlands and lowlands |
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Term
| how re the earth and the moon different? |
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Definition
moons surface is older
moon has no long mountain chains
moon has no continents fitting together
moons surface has not been affected by plate tectonics |
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Term
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Definition
| craters of all sizes... craters upon craters. |
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Term
| What geographical process on Earth is very closely related to plate tectonics? |
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Definition
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Term
| What part of the earths surface is most similar to the lunar seas? |
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Definition
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Term
| what evidence exists on the moon for the existence of plate tectonics |
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Definition
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Term
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Definition
| there is no sign of volcanic mountains on the moon, lunar seas are volcanic plains |
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Term
| only sign of tectonics on the moon |
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Definition
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Term
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Definition
| very slow due to micrometeorite bombardment |
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Term
| impact cratering on the moon |
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Definition
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Term
| what did the Apollo mission find out about water |
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Definition
| there was no water in any of the soil or rocks brought back |
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Term
| what did the rocks from the lunar seas contain? |
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Definition
| Basalt, or volcanic rock very similar to the rocks found in earths volcanic regions |
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Term
| what did the mission find out about rocks from the highlands |
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Definition
| they were almost as old as the moon, so the highlands were geographically very old |
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Term
| how did the surface of the moon come to look as it does today? |
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Definition
| the surface was heavily cratered, and asteroid strikes the surface.. and the imbrium basis is formed. This period of intense volcanism began 3.8 billion years ago. |
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Term
| the "wrinkle ridges" seen on some areas of the lunar seas are evidence for what geological process? |
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Definition
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Term
| erosion occurs very slowly on the lunar surface owing to |
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Definition
| micrometeorite bombardment |
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Term
| basalts are a type of _______ rock found in the lunar ______ |
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Definition
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Term
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Definition
thin C02 atmosphere
a few water ice clouds
liquid h20 is not stable on the surface |
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Term
| how are the earth and mars alike and different? |
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Definition
they both have regions of high and low elevation
diff: mars has no mountains or continents
no plate tectonics |
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Term
| where are the lowlands mostly located on Mars |
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Definition
| in the northern hemisphere |
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Term
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Definition
| craters are in the Southern Hemisphere nearly as plentiful as in the lunar highlands |
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Term
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Definition
| northern plains of mars. enormous shield volcanoes on Tharsis Bulge. Olympus Mons. Lowlands are volcanic plains |
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Term
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Definition
| extensive long ago, in a vertical motion. Created Mariner Valley: ancient fault associated with the formation of the Tharsis bulge. |
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Term
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Definition
wind erosion,eroded craters
Ancient water erosion: channels
-when h20 was present and the climate was warmer
light wind erosion is still present |
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