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8.9A, 8.9B Plate Tectonics

Last updated about 3 years ago

10 questions

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SCI.8.9a

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SCI.8.9a

Question 1

1.

Scientists believe that the land masses of Earth were once joined together, forming one huge supercontinent called Pangaea. Over time, the land masses gradually drifted apart to reach their present-day locations. Which of these provides the least support for this theory?

Glaciers are found at today’s north and south polar regions.

Shapes of the continents fit together like the pieces of a jigsaw puzzle.

Question 2

2.

Use your knowledge of plate tectonics to complete the table

Other Answer Choices:

Seafloor Spreading

Mid-Ocean Ridges

Faults

Coastal Volcanoes

Question 3

3.

The plate boundary located off the western coast of South America is most likely an area of __________ because the plates are __________.

Question 4

4.

The diagram shows a lab setup designed to model convection currents in Earth’s mantle. The Earth process modeled in this investigation is most likely to cause —

beach erosion

island arcs

formation of new ocean floor

small mountains with frequent earthquakes

Question 5

5.

Select the locations on the map where subduction zones are likely to be found.

Question 6

6.

Select the locations on the map where mid-ocean ridges are likely to be found.

Question 7

7.

Select the location on the map where this diagram is most accurate.

Question 8

8.

Which of these features is formed by the separation of the North American and Eurasian tectonic plates?

Ice caves

rift valley

Question 9

9.

The map below shows the locations of four active volcanoes in the Caribbean Sea.
What do these volcanoes indicate about plate tectonics in the region?

The volcanoes form a line, indicating a diverging plate boundary.

The volcanoes form an island arc, indicating a converging plate boundary.

Two plates are moving past each other, causing faulting and magma formation.

Question 10

10.

Drag and drop the correct items to complete the flow chart.

Other Answer Choices:

Alternating bands of magnetized rocks on seafloor.

Matching plant and animal fossils found on separate continents.

Evidence of glaciers found in areas of the world that are warm today.

Seafloor is spreading apart at mid-ocean ridges.

Different plant and animal fossils found on separate continents.

Plate Tectonics Evidence

Continents move by drifting on ocean crust.

Matching fossil evidence is found on opposite sides of today’s oceans.

Matching folded mountain belts are located on opposite sides of today’s oceans.

Magnetic reversal patterns at mid-ocean ridges.

deep trench

flat plateau

strike slip fault

Two plates are moving apart, creating new seafloor.