Layers of the Earth

Front

What is the outermost layer of the Earth?

Back

The crust.

Front

What is the thickest layer of the Earth?

Back

The mantle.

Front

What layer of the Earth is liquid?

Back

The outer core.

Front

What layer of the Earth is solid and made mostly of iron and nickel?

Back

The inner core.

Front

What is the asthenosphere?

Back

A part of the upper mantle that is semi-fluid and allows tectonic plates to move.

Front

What happens to less dense materials in the Earth's layers?

Back

They rise to the top.

Front

What is the main component of the Earth's crust?

Back

Rocks and minerals.

Front

What is the temperature range of the inner core?

Back

Approximately 4,000 to 5,000 degrees Celsius.

Front

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

Back

The outer core is liquid, while the inner core is solid.

Front

What is the mantle primarily composed of?

Back

Silicate minerals.