ES 6.1 plate tectonics

Which layer of the Earth is the thinnest? Circle the correct answer.

• Crust

• Mantle

• Outer Core

• Inner Core

Which of the following can occur at a subduction zone? Circle ALL that apply.

• Volcanoes

• Mid-ocean ridges

• Trenches

• Earthquake

Which of the following is mismatched? Circle the correct answer.

• Convergent boundary – fault-block mountains

• Divergent boundary – ridges

• Transform boundary – volcanoes

• Convergent boundary – fold mountains

The exact underground location where an earthquake occurs is called the ________. Circle the correct answer.

• epicenter

• thrust

• focus

• elastic rebound

What destructive phenomenon can occur along the coast if a tectonic plate moves in the middle of an ocean? Fill in the blank below.

Which of the following is NOT a way a volcanic eruption can affect the biological and human populations around the volcano?

• Destruction of habitats and loss of biodiversity

• Improvement of air quality

• Displacement of human populations

• Contamination of water sources

Refer to the image on the right of a tectonic plate boundary. What statement best describes what is happening? Circle the correct answer.

• The less dense oceanic crust is subducting under the more dense continental crust.

• The oceanic crust is melting.

• The tectonic plates are moving away from each other.

• Volcanic islands are forming

Which of the following causes Earth’s tectonic plates to move? Circle the correct answer.

• Energy from the sun

• Convection currents in the mantle

What are the types of mountain formations .

• Fault-block mountains
• Volcanic mountains

• Fold mountains

• Plateau

Will tectonic plates eventually come to a halt? Choose the correct answer.

• Yes

• No