click below
click below
Normal Size Small Size show me how
Day/Night cycle
Term | Definition |
---|---|
rotate (rotation) | to turn or spin on its axis |
axis | the imaginary line around which Earth rotates |
revolve (revolution) | to go around, or obit another object |
orbit | the path of one object in space around another object |
day/night cycle | created by the rotation of the Earth facing toward or facing away form the sun |
one day | the time it takes Earth to complete one rotation around its axis |
one year | the time it takes the Earth to complete one revolution around the sun |
sunrise/sunset | the time in the morning/evening when the sun appears/disappears on the horizon |
atmosphere | a layer of gases that surround an object in space |
gravity | a force which tried to pull two objects toward each other. Anything which has mass also has a gravitational pull. |
satellite | when an object in space orbits the Earth or another planet |