The Earth-Sun Relationship

What causes the seasons to change on earth?

What is the correct term for Earth's completion of one full trip around the sun?

What is the source of all energy on Earth?

Earth has five basic climate zones.

Rain generally falls on the side of the mountain facing the ocean.

The sun remains directly overhead in areas outside the Tropics.

Movements of air are called winds.

How many layers make up the inside of Earth?

What term describes the increase in the average temperature of the Earth's atmosphere?

Earth's atmosphere has more nitrogen than oxygen in it.