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Space
Unit 11 Vocabulary
| Question | Answer |
|---|---|
| rotation | a 24 hour period or the time it takes the Earth to make one complete rotation on its axis |
| axis | a line, real or imaginary, around which something spins |
| day | the time during rotation when the Earth faces the sun and it is lighted |
| night | the time during rotation when the Earth faces away from the sun and it is dark |
| shadow | a dark area caused when an object blocks light falling on a surface |
| moon | a natural satellite that orbits a planet |
| orbit | the path one object takes as it revolves around another object in space |
| craters | bowl-shaped indents or cavities on the surface of a planet, moon, or asteroid that are caused by a collision |
| surface | the outermost covering or layer |
| revolution | when one heavenly body in space travels around another (such as the Earth traveling around the sun every 365 days or 1 year). |
| compass | Instrument that uses a small magnet to show which direction is North (N) |
| Earth | A planet in the Solar System that has life on it |
| Gravity | A natural force that causes two objects to pull toward each other depending on their mass and the distance between them |
| Sun | The star at the center of the Solar System that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit |
| Mass | The amount of matter in an object |
| Weight | The heaviness of an object; force of gravity on mass = weight |
Created by:
jchapates
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