Layers of the earth

Front

What are the four main layers of the Earth?

Back

The four main layers of the Earth are the crust, mantle, outer core, and inner core.

Front

What is the composition of the Earth's crust?

Back

The Earth's crust is composed of solid, rocky materials.

Tags

NGSS.MS-ESS1-4

Front

What is the lithosphere?

Back

The lithosphere includes the crust and the uppermost portion of the mantle, which is solid and rigid.

Tags

NGSS.MS-ESS2-1

Front

What is the outer core made of?

Back

The outer core is composed of liquid iron and nickel.

Front

What is the inner core?

Back

The inner core is a solid sphere made primarily of iron and nickel, extremely hot and under immense pressure.

Tags

NGSS.HS-ESS2-1

NGSS.HS-ESS2-3

Front

What is the mantle?

Back

The mantle is the layer between the crust and the outer core, composed of semi-solid rock that can flow slowly.

Front

What is the difference between the lithosphere and the asthenosphere?

Back

The lithosphere is rigid and includes the crust and upper mantle, while the asthenosphere is semi-fluid and allows for the movement of tectonic plates.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other.

Tags

NGSS.MS-ESS2-3

Front

What causes earthquakes?

Back

Earthquakes are caused by the movement of tectonic plates and the release of energy along faults.

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

Front

What is convection in the mantle?

Back

Convection in the mantle is the process where hot, less dense material rises, cools, and then sinks, creating a cycle that drives plate tectonics.