Understanding Plate Tectonics

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Asthenosphere

What are tectonic plates made of?

• Only oceanic crust

• Only continental crust

• Earth's lithosphere

• Earth's core

Which type of crust is denser and thinner?

• Oceanic crust

• Continental crust

• Lithospheric crust

• Asthenospheric crust

What happens at a convergent boundary?

• Plates move away from each other

• Plates slide past each other

• Plates move towards each other

• Plates remain stationary

Which of the following is an example of oceanic-oceanic convergence?

• Andes mountains

• San Andreas Fault

• Mariana trench

• Himalayan mountains

What is created at a divergent boundary?

• New crust or lithosphere

• Earthquakes

• Mountain ranges

• Trenches

What type of boundary is the San Andreas Fault?

• Convergent boundary

• Divergent boundary

• Transform boundary

• Subduction boundary

Which type of crust is associated with granite?

• Oceanic crust

• Continental crust

• Lithospheric crust

• Asthenospheric crust

What occurs when two continental plates converge?

• A trench forms

• New crust is created

• A mountain range forms

• Plates slide past each other

What causes tectonic plates to move?

• Earth's magnetic field

• Uneven heating of the asthenosphere by Earth's core

• Gravitational pull from the moon

• Wind and ocean currents