E204 Earth's Structure

What is the Earth's core mainly composed of?

• Oxygen and silicon
• Nickel and iron
• Calcium and sodium
• Water and carbon

How does the movement of tectonic plates affect the Earth's surface?

• Forms new landmasses
• Causes earthquakes and volcanic eruptions
• Creates mountains and valleys
• All of the above

What is the Earth's crust mainly composed of?

• Iron and nickel
• Silicon and oxygen
• Magma
• Water and carbon

What is the Earth's mantle responsible for?

• Ocean currents
• Atmospheric composition
• Plate tectonics
• All of the above

What is the Earth's crust made of?

• Water
• Solid rock
• Nickel and iron
• Molten rock

What is the evidence for continental drift?

• Volcanoes
• Shapes of continents fitting together
• Magma convection currents
• Presence of water in the hydrosphere

What is the Earth's mantle made of?

• Molten rock
• Nickel and iron
• Water
• Solid rock

What causes tectonic plates to move?

• Earth's rotation
• Wind
• Gravity
• Magma convection currents

What is the Earth's solid outer layer called?

• Core
• Mantle
• Atmosphere
• Crust

On which layer of the Earth do the tectonic plates move?

• Mantle
• Atmosphere
• Core
• Lithosphere