Pangaea Review

What is Plate Tectonics?

• movement of the Earth in space

• movement of the oceans against Earth's land

• movement of the Earth around the sun

• movement of the pieces of Earth's crust

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Why do Earth's plates move?

• because of tornadoes and hurricanes

• because of Earth spinning on its axis

• because of Earth orbiting the sun

• because of molten rock heating and cooling within the mantle

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how did Pangaea break apart

• dynamite

• cave men

• Minecraft

• continental drift theory

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What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time
• Continents are stationary and do not move
• The Earth is broken into lithospheric plates that move due to convection currents
• none of the above

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As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

• The would all increase
• The would all decrease.
• Nothing, the layers are made of the same material throughout
• Temperature would decrease, but pressure and density would increase

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What is represented by the picture? 

• Sea-floor spreading
• Pangea
• How the continents are arranged today
• Volcanoes

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The circular arrows inside the Earth's Mantle represent what type of motion, that drives ALL plate movement?  

• Convergent Boundary
• Ocean Currents
• Convection Currents
• Transform Boundary

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How does fossil evidence support Wegener's hypothesis of continental drift?

• Similar fossils are found along continental margins that appear to join together.
• Fossils are found in areas where the present-day climate could not have supported the organisms that made the fossils.
• Similar fossils of giant, land-dwelling dinosaurs are found on continents separated by oceans.
• all of the above

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What are Mid-Ocean Ridges?

• A chain of underwater waterfalls 
• A chain of underwater volcanos
• A chain of underwater mountains
• A chain of underwater rocks

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True or False : Sea-floor Spreading adds new material to the ocean floor?

• True
• False