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Flashcards in Science Vocab Deck (34):
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1. Orbit

The path of an object in space as it moves around another object due to gravity.

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2. Solar System

The sun and its family of orbiting planets and moons and other objects.

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3. Galaxy

A lot of stars held together by their own gravity.

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4. Universe

All existing matter and space considered as a whole.

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5. Satellite

A machine that orbits a planet or star.

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6. Impact Crater

A small pit left from an object that struck the planet.

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7. Axis of rotation

An imaginary line about which a turning body such as Earth rotates.

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8. Revolution

The movement of one object orbiting around another object.

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9. Season

Each of the four divisions of the year. Resulting from the earth's position with the sun.

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10. Equinox

A position of time when the sun shines equally on both hemispheres.

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11. Solstice

When one hemisphere gets maximum sunlight.

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12. Lunar Mare

Lava on the moon.

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13. Eclipse

The partial blocking of light.

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14. Umbra

Complete shadow.

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15. Penumbra

A light shadow that surrounds a dark central region.

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16. Astronomical Unit (AU)

Average distance from the sun.

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17. Ellipse

An oval or a flattened circle.

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18. Terrestrial Planet

A planet that has a rocky surface.

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19. Gas Giant

A large planet that consist mostly of gasses in a dense form.

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20. Asteroid

A small rocky body orbiting the sun.

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21. Comet

A celestial object consisting of a nucleus of ice and dust.

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22. Meteor

A streak of light that passage through the earth's atmosphere.

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23. Meteorite

A small object that passage through the earth's atmosphere that strikes the ground.

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24. Geocentric

Earth centered theory of the solar system.

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25. Heliocentric

A Sun centered theory of the solar system.

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26. Gravity

A force which tries to pull objects toward each other.

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27. Tide

The rise and fall of the oceans caused by the gravitational of the moon and sun.

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28. Waxing

The increase of the Illuminated surface of the moon.

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29. Wannig

The decrease of the Illuminated surface of the moon.

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30. Gibbous Moon

More than half but less than fully illuminated.

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31. Crescent Moon

The Illuminated surface is less than a quarter Illuminated.

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32. Full Moon

The entire surface of the moon is illuminated.

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33. New Moon

The entire surface of the moon is not Illuminated.

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34. Quarter Moon

The moon is one-half illuminated by the sun.