Plate Tectonics

According to Wegener's hypothesis of continental drift,

• Earth's surface is made up of several landmasses.

• The continents do not move

• Earth is slowly cooling and shrinking.

• The continents were once joined together in a singe landmass.

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What is Pangaea?

• The name of a German scientist

• The name of a supercontinent that existed millions of years ago

• Another name for continental drift

• The name of an ancient fossil

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Which evidence was NOT used by Alfred Wegener to support his continental drift hypothesis?

• Evidence from landforms

• Evidence from fossils

• Evidence from human remains

• Evidence from climate

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Most geologist rejected Alfred Wegener's idea of continental drift because

• They were afraid of a new idea

• Wegener was interested in what Earth was like millions of years ago

• Wegener used several different types of evidence to support his hypothesis

• Wegener could not identify the force that moved the continents

As two continental plates collide, the edges of the plates are crumpled and uplifted. Which of these landforms are MOST likely a result of this type of collision?

• Normal faults

• Mountain Ranges

• U-shaped valleys

• Shield Volcanoes

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As early as the 1600's, scientists noticed that the continents appeared to fit together like pieces of a puzzle. The idea that the continents were once together and had drifted apart was not widely accepted. In the 1940'2 technology used on submarines led to evidence of continental movement. This technology allowed the scientist to do which of the following?

• to explain the causes of continental movement

• to determine fossil evidence of continental drift

• to prevent further movement of continents

• to reject theories of continental drift

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In the region where two continental plates collide, what geological feature MOST often forms?

• an ocean

• a volcano

• a river valley

• a mountain chain

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Crustal plates that pull apart from one another MOST likely form

• volcanic island arcs

• strike-slip faults

• oceanic trenches

• rift zones

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Crustal plates that pull apart from one another MOST likely form

• volcanic island arcs

• strike-slip faults

• oceanic trenches

• rift zones

In the region where two continental plates collide, what geological feature MOST often forms?

• an ocean

• a volcano

• a river valley

• a mountain chain