Review for Interior of Earth Exam

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.

The soft layer of the mantle on which pieces of lithosphere move is called

• mesosphere
• lithosphere
• asthenosphere
• outer 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

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 mantle is hot enough to be a liquid, but it is considered "plastic rock".  Why isn't it a liquid (melted rock)

• Too much pressure
• Too hot
• Too close to the radioactive core
• All choices

Scientists think that convection currents flow in Earth's

• continents
• mantle
• lithosphere
• inner core.

Earth's oceanic crust is ______ than continental crust.

• thinner but denser
• thicker and denser
• thicker but less dense
• thinner and less dense