8.9A - Plate Tectonics

Fossil records indicate that the continents were once connected. How do fossil records support this claim?

• We have been able to transport the same types of fossils from one continent to another.

• Fossils of the same organism have been found on continents that are now separated by oceans.

• Some continents contain fossils of many different types of organisms.

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One piece of evidence for Plate Tectonics is that--

• some continents appear to fit together like a puzzle.

• we have video footage of the plates actually moving.

• all continents have formed from volcanic eruptions.

• the continents are no longer moving.

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NGSS.MS-ESS2-3

Which of the following causes Earth's tectonic plates to move?

• Energy from the Sun
• Magnetic Pole Reversal
• Convection currents in the mantle
• Faults in Mountain Ranges

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Younger crust being found near mid-ocean ridges supports the idea of Plate Tectonics because---

• this indicates that new crust is being formed over time, pushing old crust outward.

• this indicates that volcanoes are able to take place in different places on the Earth.

• this indicates that new crust is never formed.

• this indicates that the continents are stationary.

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Which of the following is NOT evidence to support the theory of plate tectonics?

• Fossils

• Continental fit

• Glaciers

• Sand Erosion

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Which of the following occurs because of convection currents?

• Pressure in the crust decreases.

• The mantle increases in size.

• Pressure in the crust increases.

• Pieces of the crust, known as tectonic plates, move.

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At first, a lack of evidence for continental drift prevented many scientists from believing a single supercontinent called _________ existed.

• Glossopteris

• Pangaea

• Gondwanaland

• Mesosaurus

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The theory of _______ states that Earth’s crust and upper mantle are broken into sections that are in constant, slow motion.

• Plate Tectonics

• continental drift

• seafloor spreading

• divergent boundaries

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What drives tectonic plate movement? 

• gravity
• coriolis effect
• convection currents
• the earth's magnetic core

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How do glaciers play a role in Plate Tectonics?

• Glaciers cover parts of the Earth that have remained stationary.

• There is evidence that glaciers have not always existed.

• There is evidence that shows that the same glaciers covered different regions of several continents.

• Glaciers exist in different in different places on the Earth.

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