Planet Earth

1. The Earth does this to the Sun.
8. The imaginary line that runs through Earth's center, pole to pole.
9. The process by which the Earth's surface is worn away by forces.
10. This area of volcanoes stretches for more than 24,000 miles (3 words).
11. Earth's crust is made up of 16 of these (2 words).
13. The air we breathe that is part of the thin layer of gases that envelop the earth.
14. Caused by plate movement.

2. Earth makes one full _________ or complete trip around the sun.
3. This day is the beginning of summer.
4. A giant ocean wave caused by a volcanic eruption.
5. Humanity has now proven influential enough to alter our local and ______climate.
6. When day and night in both hemispheres are of equal length.
7. A large continuous mass of land.
12. The average weather conditions in a region or an area over a longer period.