Earth's Interior and Plate Boundaries

Wegener believed that all the continents were once joined in a large supercontinent (a)   which broke apart and the continents drifted to where they are today

• Pangaea
• Pan America
• Global Massive
• Nirvana

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VA.ES.10.d.

Of the following, which did was NOT used by Alfred Wegener as proof of continental drift?

• Plate tectonics
• Matching coastlines
• Glacial deposits
• Fossil evidence

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VA.ES.10.d.

Why was Alfred Wegener's ideas of continental drift discarded?

• Most of the important scientists of the day were English, and Wegener was American.

• He could not explain how or why the continents moved.

• He was too busy studying the jetstream in Greenland

• He believed the continents were always connected by an underwater land-bridge.

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VA.ES.10.d.

How does a convection current cause tectonic plate movement?

• Convection currents cool the Earth's surface.
• Tectonic plates move due to gravitational pull alone.
• Convection currents are only found in the atmosphere.
• Convection currents in the mantle drive the movement of tectonic plates.

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VA.ES.10.d.

Which two types of plate boundaries are shown here?

• transform and convergent

• divergent and transform

• convergent and divergent

• convergent and hot spot

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VA.ES.10.d.

Identify the ocean trench.

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VA.ES.10.d.

This is a picture of glacier scars found in Africa.  What are these evidence for?

• Africa has always been near the equator
• Africa was once in an area of the Earth that had a very cold climate
• The continents have not moved
• sea floor spreading

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VA.ES.10.d.

(a)   --the process by which new ocean floor is created at mid ocean ridges, slowly moving across ocean basins

• Seafloor Spreading
• Plate Tectonics

• Subduction

• Continental Drift

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VA.ES.10.d.

The discovery of __________________revealed the largest mountain range on Earth.

• the Himalayas
• the Andes
• the Rockies
• the Mid-Atlantic Ridge

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VA.ES.10.d.

Plate movement is caused by ______________.

• the rotation of the Earth
• ocean tides
• convection currents in the mantle
• the moon's gravity

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VA.ES.10.d.