click below
click below
Normal Size Small Size show me how
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 |