Earth's Layers and Composition

Front

Name of the thinnest layer of the Earth

Back

Crust

Front

Composition of the outer core

Back

Mostly liquid iron and nickel

Front

Densest layer of the Earth

Back

Inner Core

Front

Reason for the solid state of the inner core

Back

Immense pressure from layers above

Front

How do scientists study the Earth's interior?

Back

By studying seismic waves from earthquakes

Front

What is the crust made of?

Back

Continental and oceanic crust

Front

What is the outer core made of?

Back

Liquid iron and nickel

Front

What is the inner core made of?

Back

Solid iron and nickel

Front

What causes tectonic plates to move?

Back

Convection currents in the mantle

Front

What is the key fact about the mantle?

Back

Contains convection currents