Earth's Layers and Planets

Why is the Inner Core solid?

• Extreme Heat
• High Pressure
• All the layers are solid
• It's made of rock

Which layer of the earth is rock made mostly of iron?

• Lithosphere
• Core
• Asthenosphere
• Mantle

What part of the earth is a layer of rock that comprises 67% of Earth’s mass?

• mesosphere
• mantle
• asthenosphere
• lithosphere

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

Is the outer core a liquid or solid?

• liquid
• solid

Which of these two layers is a solid?

• innercore
• Outercore

What is the top layer of the Earth's surface called? 

• Mantle
• Innercore
• Outercore
• Crust

Temperature _____________________ as you go deeper into the earth.

• increases
• decreases
• goes up and down depending on the layer
• stays the same

Pressure ______________________ as you go deeper into the Earth

• increases
• decreases 
• goes up or down depending on the layer
• stays the same