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22 Cards in this Set
- Front
- Back
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Solar System |
Consists of the sun, planets, their moons, meteors, asteroids, and comets |
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Milky Way Galaxy |
The galaxy in which our solar system is located
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Gravity |
The force that pulls two objects together; it pulls us towars Earth and keeps the planets in motion around the sun
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Astronomy |
The study of the moon, stars, and other objects in space
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Axis |
An imaginary line that passes through Earth's center and the North and Sout poles, about which Earth rotates
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Rotation |
The spinning motion of a planet about its axis
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Revolution |
The movement of an object around another object (planets revolve around the sun; moon(s) revolve around their planets)
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Orbit |
The path of an object as it revolves around another object in space |
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Tides |
The daily rise and fall of Earth's waters on shores |
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Gravity |
The attractive force between two objects; its magnitude depends on thier masses and the distance between them |
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Satellite |
Any object that revolves around another object |
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Phase |
one of the different shapes of the moon as seen from Earth
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Crater |
A round pit on the moon's surface
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Maria |
Dark, flat regoins on the moon's surface
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Core |
The central part of the sun, where nuclear fusion occurs
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Comet |
(dirty snowball): a ball of ice and dust whose orbit is usually a long, narrow eclipse; it has a "glowing tail" up to 200 miles long
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Asteroids |
(Minor planets or planetoids): objects revolving around the sun that are too small and too numerous to be considered planets
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Asteroid Belt |
The region of the solar system between the orbits of Mars and Jupiter, where many asteroids are found |
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Meteoroid |
A chunk of rock or dust in space
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Meteor |
(shooting star): A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere |
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Meteorite |
A meteorite that has hit Earth's surface |
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Space Station |
A man-made labratory orbiting the Earth |
