This is where meteors burn up.

• Troposphere
• Mesosphere
• Thermosphere
• Exosphere

The thinnest layer of the Earth is?

• Mantle
• Lithosphere
• Athenosphere
• Crust

The lithosphere combines what two layers?

• Athenosphere & Crust
• Crust & Upper Mantel
• Mantel & Athenosphere

What happens to pressure as we move from the crust to the inner core?

• Pressure Decreases
• Pressure Increases
• Nothing

What happens to temperature as we move from the crust to the inner core?

• Decreases
• Increases

What are the two types of crust

• continental and oceanic
• ocean and upper
• lower and upper
• pizza and subway

Identify layer  #20.

• mantle
• asthenosphere
• inner core
• outer core

Which layer of the earth has the lowest temperature?

• Crust
• Mantle
• Outer Core
• Inner Core

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

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

Which layer of Earth is LIQUID?

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