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Definition
Explanatory, Predictive(testible),
Results=Reproducible |
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Definition
1.) Make hypothesis
2.) Test it
3.) Revise hypothesis
4.) Repeat |
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Definition
Scientists write up their hypotheses or experimental results and submit them to peer-review journals |
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Is Mathematics a science? |
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Definition
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Term
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Definition
A nebula is an interstellar of dust, hydrogen, helium, and other ionized gases. |
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What is this a picture of?
http://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Nursery_of_New_Stars_-_GPN-2000-000972.jpg/250px-Nursery_of_New_Stars_-_GPN-2000-000972.jpg |
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Definition
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Term
How many kilometers(km) in one A.U.? |
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Definition
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Term
How many kilometers(km) in a light-year? |
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Definition
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Term
How many kilometers are in a parsec? |
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Definition
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Term
What are the two concepts of a parsec? |
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Definition
1.) if a star is at 1 parsec, as earth moves at 1 au it will appear to shift at 1 parsec
2.) how far an object would have to be in order for it to appear to move 1 arcsecond as earth moves by 1 au |
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Term
1 degree = ? arminutes
1 arcminute = ? arcseconds
1 degree = ? arcseconds |
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Definition
1 degree = 60 arcminutes
1 arcminute = 60 arcseconds
1 degree = 3600 arcseconds |
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Term
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Definition
d = l/p
Distance[parsecs]=baseline[A.U.]/parallax angle [Arcseconds] |
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Term
Parallax only works for...
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Definition
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Term
| Which stars show greater parallax? |
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Definition
| Nearby stars (i.e. Alpha Centauri shows greater parallax than Sirius) |
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Term
Is Parallax viewable to the naked eye?
How is the distance determined when using parallax? |
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Definition
No, it is only viewable through a telescope.
Distance is detereminted by different points of view by month. |
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Term
What are three "fundamental qualities" of the universe? |
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Definition
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Term
How fast does Earth spin about it's axis? |
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Definition
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Term
What is Earth's average orbital speed around the sun? |
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Definition
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Term
| How often does our sun and stars of the local solar neighborhood orbit around the center of the Milky Way Galaxy? |
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Definition
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Term
| Motions in the sky--> day is because of... |
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Definition
| rotation of the Earth about it's axis |
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Term
| Seasons-->Year is caused by... |
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Definition
| the earth's orbit around the SUN |
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Term
| The Moon---> Month is caused by... |
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Definition
| The moon's orbit around the earth |
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Term
Planets---> Weeks
is caused by... |
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Definition
| the various planet's orbits around the sun |
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Term
| What is a contellation, and what are they modernly used for? |
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Definition
A constellation is a region of the sky often recognizable by a pattern or grouping of stars.
They are used as landmarks. |
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Term
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Definition
| Point directly over your head in the sky |
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Term
| The Celestial Equator is... |
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Definition
| Same as earth's equator except located on the celestial sphere |
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Term
What is the definition of circumpolar? |
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Definition
| Stars that never set/ stars that never rise |
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Term
| Sidereal Day vs. Solar Day |
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Definition
23 hrs, 56 min, 4.1s
24 hrs |
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Term
Identify:
http://upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Aurora_Timelapse.ogv/seek%3D9-Aurora_Timelapse.ogv.jpg |
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Definition
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Term
| As earth orbits the sun, the Sun appears to move ______ with respect to the stars. |
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Definition
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Term
| How exactly long is a year? |
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Definition
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Term
| Why are the moon and planets seen only in the constellations of the zodiac? |
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Definition
| The planets all orbit in nearly the same plane and the zodiacal constellations are in that plane. |
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Term
| Highest possible latitude you can live at: |
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Definition
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Term
| What causes summer to be hot? |
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Definition
| The sun is not only up for more hours, but it climbs higher in the sky due to it's location and the *rays hit the ground more directly. |
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Term
| What is the angle of the earth's axis tilt? |
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Definition
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Term
| When is the sun directly overhead in Florida? |
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Definition
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Term
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Definition
The apparent path of the Sun through the sky |
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Term
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Definition
Where the exliptic intersects the celestial equator |
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Term
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Definition
Where the ecliptic is farthest from the celestial equator |
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Term
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Definition
The constellations which lie along the ecliptic |
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Term
Living at equator
Length of summer day:
Length of winter day:
Sun directly over head when?: |
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Definition
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Term
| Why are July/August typically hotter than June? |
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Definition
| Rays from sun at the Solstice(Jun21) takes time to heat up the earth |
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Term
| What is not changed by the precession of the earth's axis? |
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Definition
| The location of the North Celestial Pole in your sky |
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Term
How long is that lunar cycle? |
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Definition
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Term
| Order of the moon's cycle: |
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Definition
i. New (beginning of waxing)
ii. Crescent
iii. First quarter
iv. Gibbous
v. Full (end of waxing, beginning of waning)
vi. Gibbous
vii. Last quarter
viii. Crescent (end of waning) |
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Term
Identify:
http://www.noao.edu/outreach/aop/observers/n4449.html |
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Definition
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Term
| Like the sun, planets appear to move _____ relative to the stars |
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Definition
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Term
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Definition
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Term
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Definition
Each planet's orbit around the Sun is an ellipse, with the sun at one focus.
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Term
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Definition
A planet moves along its orbit with a speed that changes in such a way that a line frm the planet to the sun sweeps out equal area in equal intervals of time
(planet moves faster when closer to the sun)
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Term
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Definition
The ratio of the cube of a planet's average distance from the Sun to the square of its orbital period is the same for each planet.
Mass does NOT effect orbital speed, what attracts (i.e.,) the sun and planets are the CENTERS of the mass, not the mass itself |
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Term
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Definition
a= needs to be measured in A.U.
p= period the orbit (earth years) |
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Term
| If Jupiter is 5 times away from the earth, it takes Jupiter... |
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Definition
A = 5 a.u.
a3 = 125 years
p2= (square of) 125 |
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Term
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Definition
| position, velocity, acceleration |
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Term
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Definition
rate of change of position
vector (has magnitude and direction) |
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Term
| Acceleration (2 concepts) |
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Definition
rate of change of velocity
vector |
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Term
| Relative to the age of the universe, how old is our solar system? |
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Definition
| about 1/3 the age of the universe |
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Term
| What do astronomers mean by a constellation? |
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Definition
| A constellation is a region in the sky as seen from Earth |
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Term
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Definition
| The roughly 18-year cycle over which the pattern of eclipses repeats |
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Term
| what is stellar parallax? |
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Definition
| It is the slight back-and-forth shifting of star positions that occurs as we view the stars from different positions in Earth's orbit of the Sun. |
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