Layers of the Earth

Which of these layers is ALL solid iron and nickle?

• inner core
• outer core
• lithosphere
• mesosphere

The layer that makes up most of the earth's mass and volume is the

• crust
• mantle
• core
• asthenosphere

Scientists think that convection currents that move the plates flow in Earth's

• Continental crust
• Oceanic crust
• Asthenosphere
• Lithosphere

As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

• The would all increase
• The would all decrease.
• They would stay the same.  
• Temperature would decrease, but pressure and density would increase. 

The physical layer of Earth made of solid rock and soil is called the ___________. 

• mesosphere
• lithosphere
• asthenosphere
• mantle

Where does the heat come from that drives this convection current in the mantle? 

• The sun
• The crust
• the mantle
• the core

This layer of Earth is the thickest part

• crust
• outer core
• mantle
• inner core

What is the name of the layer that contains the uppermost mantle and crust

• Asthenosphere
• Mesosphere
• Lithosphere
• Transosphere

A break or crack in the Earth's crust is called a...

• plate
• fault
• fold
• crack

Which is the most thinnest layer of the earth?

• Mantle
• crust
• Bread crust
• Pizza crust