Earth's layers

The name of the super continent that existed 210 mya is called

• Continental

• Gondwana

• Pangaea

• Super America

What theory did Alfred Wegener come up with?

• Plate tectonics

• Continental drift

• Convection currents

• Gravity

Where on the ocean floor is new crust being created?

• Mid-ocean ridges

• Continental shelf

• Deep ocean trenches

• Continental slope

Which natural event is NOT caused by plate tectonic movement?

• Earthquakes

• Volcanoes

• Ocean tides

• Mountain formation

Which layer of the Earth is made from solid iron and nickel?

• Crust

• Mantle

• Outer core

• Inner core

Which layer of the Earth has the highest temperature and pressure?

• Crust

• Outer core

• Mantle

• Inner core

What is the difference between oceanic and continental crust?

• Continental is thicker

• Oceanic is sedimentary rocks

• Oceanic is denser

• Oceanic floats on the mantle

Magma is...

• Solid

• Cold

• Liquid

• Semi-molten

What is the driving force behind tectonic plate movement?

• Magnetic reversal

• Subduction zones

• Convection currents

• Collision zones

Convection currents occur in the...

• Crust

• Outer core

• Asthenosphere

• Lithosphere