Plate Tectonic & Water Unit Test Review

Why are supervolcanoes different from other volcanoes?

• Because they are very large and have very big eruptions/explosions.

• Because they are very large and erupt/explode frequently.

• Because they only form at hot spots and erupt/explode frequently.

When does magma form?

• Magma forms when water evaporates at low temperatures.
• Magma forms when rocks are compressed without melting.
• Magma forms when the oceanic plate melts as it sinks into the mantle, where heat and pressure cause the rock to melt.

Earthquakes occur along _____ lines and cause a large amount of ______ to be released.

• fault; energy

• oceanic ridges; gravitational force
• magnetic field zones; thermal energy

The Hawaiian Islands and the Yellowstone supervolcanoes are both located over what?

• They are both located over hotspots

• They are both located over tectonic plates

• They are both located over fault lines

When tectonic plates are moving toward each other is is called what?

• Divergent boundary
• Transform boundary
• Convergent boundary

Mountains formed as the plates move together because this is a _________ boundary.

• convergent
• transform
• divergent

When two tectonic plates move away from each other, it is called a ________ boundary.

• divergent
• transform
• convergent

The Law of Superposition means that _____ layers are found below the _______ layers.

• younger; older
• newer; older
• older; younger

Plastic in the ocean kills ocean animals. Select 2 major reasons below: (There are 2 correct answers)

• Plastic provides food for marine animals.
• Ocean animals eat plastic, but it has no nutritional value.

• Plastic acts as a shelter for fish species.
• Plastic entangles ocean animals and hampers movement.

What are 3 ways people harm the ocean?

• Burning fossil fuels, overfishing, and using pesticides and fertilizers.

• Marine conservation efforts, building artificial reefs, and reduce use of plastics.

• Sustainable fishing practices, marine conservation efforts, and reducing carbon emissions.