Earth's Layers Flashcard Review

Front

What are the main layers of the Earth?

Back

The 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 primarily composed of rocks and minerals, including silicates and oxides.

Front

What is the temperature of the inner core?

Back

The temperature of the inner core can reach up to 5,700 degrees Celsius (10,300 degrees Fahrenheit).

Front

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

Back

The inner core is solid due to immense pressure, while the outer core is liquid and composed mainly of iron and nickel.

Front

How thick is the Earth's crust compared to other layers?

Back

The Earth's crust is the thinnest layer, averaging about 5-70 kilometers thick.

Front

What is the mantle made of?

Back

The mantle is made of semi-solid rock, primarily silicate minerals, and extends to about 2,900 kilometers deep.

Front

What is the role of convection currents in the mantle?

Back

Convection currents in the mantle drive plate tectonics and influence volcanic activity.

Front

How does heat transfer from the Earth's core to the surface?

Back

Heat transfers from the Earth's core to the surface primarily through conduction and convection.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the uppermost part of the mantle.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer beneath the lithosphere that allows for the movement of tectonic plates.