Layers of the Earth

Front

What are tectonic plates made up of?

Back

Tectonic plates are made up of continental crust and oceanic crust.

Front

What happens to temperature as we move from the crust down into the inner core?

Back

The temperature increases.

Front

What describes the outer core?

Back

The outer core is liquid.

Front

Which layer of Earth has the greatest density?

Back

The inner core has the greatest density.

Front

What is the composition of the inner core?

Back

The inner core is made of solid iron and nickel.

Front

What is the Earth's crust?

Back

The Earth's crust is the outermost layer of the Earth, consisting of solid rock.

Front

What is the mantle?

Back

The mantle is the layer of the Earth between the crust and the outer core, composed of semi-solid rock.

Front

What is the outer core?

Back

The outer core is the layer of the Earth beneath the mantle, composed of liquid iron and nickel.

Front

What is the inner core?

Back

The inner core is the solid innermost layer of the Earth, composed mainly of iron and nickel.

Front

How thick is the Earth's crust?

Back

The Earth's crust is about 5 to 70 kilometers thick.