Earth Interior

The deeper into Earth you go the...

• greater the pressure
• less pressure
• pressure remains the same

Scientists think that convection currents flow in Earth's

• continents
• mantle
• lithosphere
• inner core.

Which layer of Earth is LIQUID?

• upper mantle
• lower mantle
• outer core
• inner core

What are the two kinds of crust?

• lithospheric and asthenospheric
• silicon based and iron based
• continental and oceanic
• outer and inner

Which layer of Earth is the thinnest?

• crust
• mantle
• outer core
• inner core

Which layer of Earth is made up of tectonic plates?

• outer core
• inner core
• asthenosphere
• lithosphere

Which layer of Earth has the GREATEST density?

• crust
• mantle
• outer core
• inner core

Which layer contains soil?

• Mantle
• Asthenosphere
• Crust
• Mesosphere

The four layers that make-up the earth’s composition are

• Crust, Lithosphere, Mesosphere and Core
• Lithosphere, Asthenosphere, Mantle and Core
• Crust, Mantle, Outer Core and Inner Core
• Mantle, Outer Core, Lithosphere and Crust

The crust is...

• Thick...same thickness as the other layers
• Thin...the picture on this page shows the correct scal
• Very thin...like an eggshell covering an egg
• Medium thickness...just a little thinner than the mantle and core