This term translates to equal night. It is one of two days when the sun is directly above the equator.

This sphere is a thin layer of gas that surrounds the entire Earth.

This sphere contains all water on Earth.

how many layers does Earth have?

This is the outermost layer of Earth. It contains landforms and ranges from 3 to 50 miles of thickness.

This layer is the thickest layer. It produces convection heat that causes the movement of Earth's plates.

Two plates that move towards each other are doing what type of movement?

When 2 plates move away from each other they are______________ plates.

This type of movement is when one plate is pushed under another plate.

Scientists believe that wildfires and some other natural disasters may occur more often due to