| A | B |
|---|
| As the Earth moves around the sun, it spins, or | rotates |
| As Earth rotates, the part that is facing the sun has | day time |
| The real or imaginary line that a spinning object turns around is a | axis |
| What is it called when the Earth moves in a circular path around the sun | revolves |
| The path Earth travels around the Sun is called | orbit |
| Earth's orbit is shaped like a _________ or flattened circle | ellipse |
| This causes seasons because of the different ways the Sun's rays strike parts of the Earth | Earth's tilt |
| The force that holds things on the ground and determins how much they weigh is | gravity |
| The moon revolves around | earth |
| The surface of the moon has mountains, large flat plains, and thousands of pits in the ground called | craters |
| As the moon travels around Earth, it appears to change | phases |
| The sun is a hot glowing sphere of gases called a | star |
| The sun's fuel is | hydrogen |
| The system that contains the Sun and the objects that orbit around it is called the | Milky-way |
| What planet is closet to the sun | Mercury |
| What planet is the hottest | Mars |
| Mars is known as the | Red Planet |
| The largest planet in the solar system | Jupiter |
| This planet has thousands of rings | Saturn |
| This planet looks like it is lying on it side | Uranus |
| This planet is a gas giant | Neptune |
| This planet is farthest from the sun | Pluto |
| Thousands of chunks of rock and metal that orbit the sun are called | asteroids |
| Small pieces of ice, rock, or metal that have broken off of colliding comets or asteriods are called | meteors |
| When a meteor hits the Earth, it is called a | meteorite |
| These are chunks of ice with bits of rock and dust sometimes called "dirty snowballs" | comets |
| A pattern or picture outlined by stars is called | constellation |
