FLASHCARD Compositional Layers of Earth

Front

What is the least dense layer of the Earth?

Back

Crust

Front

What happens to pressure, density, and temperature as you get closer to Earth's core?

Back

They all increase.

Front

What happens to colder, more dense magma near the crust?

Back

It sinks.

Front

Which layer of the Earth has temperatures of 20˚ - 870˚C (68˚ - 1598˚F) and is the coolest layer?

Back

Crust

Front

Where does the molten rock in the mantle become hotter and less dense?

Back

Near the core.

Front

What are the three main layers of the Earth?

Back

Crust, Mantle, Core.

Front

What is the composition of the Earth's crust?

Back

It is primarily made of rocks and minerals.

Front

What is the mantle made of?

Back

It is made of semi-solid rock that flows slowly.

Front

What is the outer core composed of?

Back

It is composed of liquid iron and nickel.

Front

What is the inner core?

Back

It is a solid ball made mostly of iron and nickel.