Ocean Ridges and Trenches

Multiple Choice

If the grasshopper were to be removed completely from the food web, what organism would be most effected?

• The squirrel
• The shrew
• The deer
• The rabbit

Multiple Choice

During sea floor spreading, molten material rises up from the mantle...

• along the continents
• at the mid ocean ridges
• deep ocean trenches
• at north and south poles

Multiple Choice

Why does oceanic crust sink below the continental crust during subduction

• oceanic crust is less dense

• oceanic crust is more dense

• oceanic crust is older

• oceanic crust is warmer

Multiple Choice

What is the source of energy that drives plate movement?

• the subducton of the sea floor

• the different densities of the oceanic and crustal plates

• convection currents in the asthenosphere

• the friction force between the plates that move past each other

• The Earth's crust is broken into plates and where they meet are called plate boundaries

• Plates interact with each other at these boundaries​

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​Plate Boundaries

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Multiple Choice

Convergent Plate Movement can create

• Rifts
• Mountains
• Ocean Ridges
• Radiation

Multiple Choice

A plate boundary where two plates move away from each other is called

• Divergent Boundary
• Convergent Boundary
• Transform Boundary
• Subduction

Multiple Choice

Where are earthquakes MOST LIKELY to occur?

• close to the equator

• close to the center of tectonic plates

• at divergent or convergent plate boundaries

• at transform plate boundaries