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| Which ancient astronomer developed a geocentric model of the universe explaining the observable motions of the planets? |
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| The shadow that the earth cast on the moon was round |
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| Aristotle concluded that Earth was round because |
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| Everything revolved around Earth |
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| The geocentric model of the universe stated that |
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| In the Ptolemaic model of the universe, what was the center? |
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| One astronomical unit(AU) averages about how many kilometers? |
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| The first early astronomer to propose a sun-centered solar system was |
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| Which scientist discovered that Venus has phases, just like the moon? |
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| The force that gravity exerts on an object is called? |
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| What is the shape of a planet's orbit |
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| Which scientist determined the nature of the forces that keep the planets in their orbits? |
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| Which scientist was the first to use the telescope in astronomy? |
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| The true shape of planetary orbits was discovered by? |
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| What movement of earth is responsible for night and day? |
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| the turning of a body on its own axis is known as |
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| During the period that the moon's phases are changing form new to full, the moon is |
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| The moon must pass between Earth and the sun |
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| what must happen for a solar eclipse to occur |
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| Round depression on the moon's surface are called |
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| because it has no atmosphere |
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| Why does the moon have more craters that Earth ? |
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| The most obvious difference between the terrestrial and the Jovian (outer,gaseous) planet is |
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| Their large,gaseous, less dense, have rings, and moons |
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| What are characteristics of the Jovian planets? |
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| The formation of the solar system form a huge cloud of dust and gaseous is called the |
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| Most asteroids lie between the orbits of |
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| A comet's tail always points |
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| The small particles that produce a streak of light upon entering Earth's atmosphere is called? |
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| the remains of extraterrestrial particles that are found on Earth's surface are called |
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| What information foes a star's spectrum offer about the sun? |
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| When a source moves toward or away from Earth, what changes occur in the wavelength of energy emitted by the source |
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| Large Doppler shifts indicate |
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| Using the Doppler effect, astronomers can determine a star's |
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| a refracting telescope produces an image using a(n) |
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| Mirror, No chromatic aberration |
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| a reflecting telescope produces an image using a(n) |
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| can see past the electromagnetic spectrum, cheaper, not affected by weather and can run 24/7 |
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| What advantages do radio telescope have other telescope used on Earth? |
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| They can see farther, There is no atmosphere for it to block anything |
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| what advantages do space telescopes have over telescopes used on Earth? |
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| The layer of the sun that radiates most of the light that reaches earth is the |
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| streams of electrons and protons that shoot out from the sun's corona and make up the |
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| What is feature is labeled in D? |
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| What solar feature is labeled C? |
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| By observing sunspots, Galileo concluded that the sun... |
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| Sunspots appear dark because they are... |
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| Disrupting cell phone service, and interfering with satellites |
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| What effects do solar flares have on Earth? |
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| The source of the Sun's energy is... |
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| Stars of which color have the highest temperature? |
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| the angle that we view the stars in order to find the distance. |
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| The measure of a star's brightness is called it's... |
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| About 90 percent of stars on the H-R diagram are... |
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| The sun has an absolute magnitude of... |
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| Another name for the interstellar matter that will eventually form a star is... |
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| Which force is most responsible for the formation of a star |
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| Massive stars terminate in a brilliant explosion called a... |
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| When a main-sequence star has exhausted the fuel in its core it becomes a... |
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| The sun is what kind of star? |
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| Light cannot escape the intense gravitational pull of a... |
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| What evidence supports the theory that the universe is expanding? |
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| Matter was pulled together and exploded to become the universe. |
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| Explain the Big Bang Theory |
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| Why will the universe eventually collapse? |
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| The Space rover, Spirit, was sent to Mars to search for what? |
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| What space probe was sent to Saturn? |
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| The Sun and Planets formed from interstellar dust and gas |
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| What is the Nebular Theory? |
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| Cannot create or destroy energy, all matter came from something. |
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| What is the Law of Conservation? |
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| What is released in the process of fusion |
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| Star A has a higher apparent magnitude |
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| If star A is farther from Earth than star B, but both stars have the same absolute magnitude, what is true about their apparent magnitude? |
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| Which magnitude would be associated with the brightest star? |
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| Surface temperature and magnitude |
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| A Hertzsprung-Russell (H-R) diagram shows the relationship between... |
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