Earth, Moon, and Sun

1. the dark parts of the Moon’s surface, made up of ancient lava eruptions
3. the motion of the Earth spinning on its axis
6. fragment of a planetary body, such as moons, planets, asteroids, and comets, that strikes Earth
9. A lunar eclipse occurs when the Moon passes through Earth's shadow
12. A solar eclipse occurs when the Moon passes between Earth and the Sun
14. related to the Moon
15. a bowl-shaped depression on the surface of the Moon, caused by impact from a meteorite

2. the Earth’s movement around the Sun in an orbit
4. the light parts of the Moon’s surface, composed of high crater rims
5. one half of a sphere
7. all the water on Earth
8. force of attraction that exists between all objects in the universe
10. an imaginary line that runs from the North Pole to South Pole through the center of Earth
11. the stream of radiation emitted by a solar flare, which extends millions of kilometers out into space and can even reach Earth
12. cooler, darker area on the Sun’s surface that has lower temperatures than the surrounding area
13. layer of the sun that surrounds the radiative zone; energy in this zone moves as flowing cells of gas