Composition of the Earth

Front

What is the mantle?

Back

The middle layer of the Earth, which contains most of the Earth's mass.

Front

What does the physical structure of the Earth refer to?

Back

The 5 physical properties of the layers of the Earth.

Front

What are tectonic plates?

Back

Pieces of lithosphere that move around on top of the asthenosphere.

Front

What is the inner core?

Back

The dense center of the Earth.

Front

What is the crust?

Back

The outermost layer of the Earth, which is the thinnest layer.

Front

What are the three main layers of the Earth?

Back

Crust, mantle, and core.

Front

What is the asthenosphere?

Back

The semi-fluid layer of the mantle on which tectonic plates move.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, including the crust and upper mantle.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid and dense, while the outer core is liquid and less dense.

Front

What causes earthquakes?

Back

The movement of tectonic plates and the release of energy in the Earth's crust.