What part of the earth is a layer of rock that makes up most of Earth’s mass?

• core

• mantle

• asthenosphere

• lithosphere

Which of these layers is SOLID iron and nickel?

• inner core

• outer core

• lithosphere

• mesosphere

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

• Continental crust
• Oceanic crust
• Asthenosphere
• Lithosphere

The outermost solid layer of the Earth is called the

• mantle
• outer core
• inner core
• crust

The layer that lies beneath the mantle and surrounds the inner core. 

• mantle
• outer core
• inner core
• crust

What are the two types of crust?

• top crust,bottom crust
• oceanic crust, continental crust
• water,land
• none of the above 

What is the rigid layer of the Earth's surface made up of the  crust and upper mantle called?

• asthenosphere
• lithosphere
• mesosphere
• continental crust

How many layers of the Earth's CORE are there?

• one
• two
• three
• four

Large pieces of lithosphere that move around on the asthenosphere are called

• Crust plates
• Tectonic plates
• Mantle pieces
• Core plates

what is not a layer of the Mantle?

• Lithosphere
• Stratosphere
• Asthenosphere
• Mesosphere