Layers of the Earth

Front

What are the layers of the Earth?

Back

The Earth is composed of four main layers: the crust, mantle, outer core, and inner core.

Front

What is the lithosphere?

Back

The lithosphere is made up of the crust and a portion of the upper mantle, composed of rigid rocks.

Front

What is the asthenosphere?

Back

The asthenosphere is a layer of the upper mantle that is plastic and flowing, allowing tectonic plates to move.

Tags

NGSS.MS-ESS2-3

Front

What causes tectonic plate movement?

Back

The movement of tectonic plates is caused by convection currents in the mantle.

Tags

NGSS.MS-ESS2-3

Front

What is the composition of the Earth's crust?

Back

The Earth's crust is primarily composed of rocks and minerals, including silicates.

Tags

NGSS.MS-ESS3-1

Front

How does the density of the Earth's crust compare to the core?

Back

The Earth's crust has a lower density than the core.

Front

What is the outer core made of?

Back

The outer core is primarily composed of liquid iron and nickel.

Front

What is the inner core?

Back

The inner core is a solid sphere made mostly of iron and nickel, located at the center of the Earth.

Front

What is the difference between the lithosphere and asthenosphere?

Back

The lithosphere is rigid and includes the crust and upper mantle, while the asthenosphere is plastic and allows for movement.

Front

What geological features are caused by tectonic plate collisions?

Back

Tectonic plate collisions can cause earthquakes, volcanoes, and mountain ranges.

Tags

NGSS.MS-ESS2-2