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How many layers does planet Earth have?

• 3

• 5

• 4

• 2

Name the layers of the Earth from the center out.

Which layer of the Earth is the hottest?

• Mantle

• Core

• Crust

• Lithosphere

The crust is broken into many large pieces called _________ plates.

What two metals are found in the outer core?

• Copper and Iron

• Oxygen and Silicon

• Iron and Nickle

• Iron and Magnesium

What layer of the Earth does convection occur in?

• The Core

• The Crust

• The Mantle

The inner core is not as hot as the outer core, that's why it is a solid and the outer core is a liquid.

• True

• False

Which continent is number 4?

• Asia

• South America

• Africa

• Australia

Which continent is number 3?

• Africa

• Europe

• South America

• North America

Why are there convection currents in the mantle?

• Cold air from the crust pushes down

• Heat from the core goes up

• Because the mantle is made of water

• Because the moons gravity pulls it