About the Earth

What is the outermost layer of the Earth?

• crust
• mantle
• outer core
• inner core

Which is thicker, continental or oceanic crust?

• continental
• oceanic

What layer of the mantle is flexible like plastic?

• lithosphere
• asthenosphere
• lower mantle

What layer of the mantle breaks into plates and is like the crust?

• lithosphere
• asthenosphere
• lower mantle

Which part of the core is liquid metal?

• outer core
• inner core

What two metals make up the core?

• aluminum and silver
• iron and nickel
• iron and aluminum

• silver and nickel

What is the correct order (starting from the surface) of Earth's layers?

• crust, mantle, inner core, outer core
• mantle, outer core, inner core, crust
• inner core, outer core, mantle, crust
• crust, mantle, outer core, inner core

Which layer of the earth is a pure liquid?

• crust
• mantle
• outer core
• inner core

The crust and the uppermost mantle make up the solid layer of hard rock called the

• inner core
• asthenosphere
• lithosphere
• outer core

How does temperature change as you move from the crust to the core?

• it gets cooler
• it gets hotter
• it stays the same
• the core is frozen