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Sun, Earth, Moon
| Term | Definition |
|---|---|
| Satellite | a celestial body orbiting around a planet or a star |
| Sun | (or Sol) The star at the center of the Solar System that supplies heat and light to Earth; its enormous gravity keep the Solar System in orbit. |
| Gravity | A natural force that causes two objects to pull toward each other depending on their mass and the distance between them. |
| Craters | Bowl-shaped indents or cavities on the surface of a planet, moon, or asteroid that are caused by a collision with another object, such as a meteorite. |
| Orbit | The path one object takes as it revolves around another object in space. |
| Moon | A natural satellite that orbits a planet. Some planets have no moons; others have over 60 moons. |
| Atmosphere | The whole mass of air surrounding the Earth. |
| Rotate(Rotation) | To spin on an axis; a 24-hour period, or the time it takes Earth to make one complete rotation on its axis. |
| Axis | A line, real or imaginary, around which something spins. |
| Apparent movement | Earth's rotation during the day gives the false appearance of the sun's _________________ from East to West across the sky |
| Day | period during rotation when the side of the Earth facing the sun is lit |
| Night | Period during rotation when the side of Earth facing away from the sun is dark |
| Revolution – (Revolve) | the action by a celestial body of going round in an orbit |
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Nicholasscience