Plate Tectonics Basics Review

Put the layers of the Earth in order from lowest density (number 1) to highest density (number 4)

• Crust

• Inner Core

• Mantle

• Outer Core

Associate the correct properties with the correct layer of the Earth

Groups:

(a) Mantle

,

(b) Outer Core

,

(c) Inner Core

,

(d) Crust

• Medium Density

• Solid

• Close to highest density

• Molten Iron and Nickel

• Lowest Density

• Semi Solid

• Silicon, Oxygen, and Aluminium

• A mix of Silicon, Oxygen, Iron, and Magnesium

• Highest Density

• Solid Iron and Nicke

This is a section of the Atlantic ocean between South America and Africa. Click on the area where the newest ocean floor is being produced?

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Arjun, David, and Aria are studying geography. They are looking at a map of (a)   . They are trying to understand how the (b)   have (c)   over time due to (d)   .

• Pangaea

• continents

• moved

• plate tectonics

• continental drift

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Anika, Michael, and Grace are on a field trip to a natural history museum. They come across an exhibit about Glossopteris, a prehistoric tree. The exhibit explains that fossils of this tree are found all over the world and were key evidence supporting the theory of Pangaea. The students are curious as to why this is the case.

• Because trees like Glossopteris can't walk and they don't live in the sea.

• Because tree seeds, like those of Glossopteris, are spread by animals or the wind.

• Because pollen, like that of Glossopteris, is spread by animals or the wind.

• The fact that this fossil is found everywhere does not explain why it is important.

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Mia, Ethan, and Anika are on a field trip to the San Andreas Fault as part of their geology studies. They are intrigued by the fact that the city of Los Angeles is constantly moving due to the motion of this fault. Can you help them understand in which compass direction is Los Angeles moving?

• Southwest

• Northwest

• Northeast

• Southeast

Where is the hottest, densest layer?

What was the main reason that Wegener's theory received a lot of ridicule from the scientific community?

• No similar fossils were found on different continents.

• There was no data to suggest any change in geologic structures.

• Wegener did not give a method on how the continents actually moved.

• The outlines of the continents looked like puzzle pieces that would fit together.

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Shark teeth were discovered in an area where there was no source of water. What is the BEST explanation for this?

• Sharks used to live on flat land.

• The area was once covered with salt water.

• The area was once covered with freshwater.

• Someone buried the shark teeth deep in the ground.

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Tree fossils were found in the desert. What can we infer about the tress and the land where the fossils were found?

• Trees adapted to live in the desert.

• The tress are extinct now, but used to live in the desert.

• This area has many trees because it has always been a desert.

• The area was once home to many trees and has not always been a desert.

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