Earth Science Basics

Front

What is the outer layer of the Earth called?

Back

Crust

Front

What is the Earth's crust made of?

Back

Rocks that are broken down and remade again.

Front

What lies beneath the Earth's crust?

Back

Mantle

Front

What elements make up the Earth's mantle?

Back

Magnesium, iron, and silicon.

Front

What is the middle layer of the Earth called?

Back

Core

Front

What elements make up the Earth's core?

Back

Nickel and iron.

Front

What is the state of the Earth's inner core?

Back

Solid

Front

What is the state of the Earth's outer core?

Back

Liquid

Front

What is a mountain?

Back

A landform that is higher than 600 meters or 2,000 feet.

Front

What is a valley?

Back

A low area between mountains or other high landforms.