TEST: Plate Tectonics

The fossil plant Glossopteris has been found in Africa, Australia, India, South America, and Antarctica. What claim is supported by this evidence?

• Fossils can be found on nearly every continent in the world.

• The continents were once completely covered by ice and snow.

• The continents have moved apart from one another over time.

• Plants can travel across oceans to grow on other continents.

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TEKS.SCI.7.10A

Which statement describes fossil evidence that supports the idea that Earth has changed over time?

• Fossils of a variety of species are found on a continent.

• Many fossils look similar and can be found in rocks.

• Fossils from the same species can be found on multiple continents.

• Many fossils of related animals are found in the same area.

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TEKS.SCI.7.10A

What information found on the map provides evidence for plate tectonics? Choose three.

• All of the fossils on the map represent animals that were strictly terrestrial.

• Only the fern could survive in southern locations because of heat.

• The fossil evidence proves the animals had the ability to fly.

• The fossils match up where the continents have been separated by water.

• The coastlines of the continents fit together like puzzle pieces.

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TEKS.SCI.7.10A

Classify each statement as Supports Plate Tectonics or Does NOT Support Plate Tectonics.

Groups:

(a) Supports plate tectonics

,

(b) Does not support plate tectonics

• crust found near

  the coast of Africa is older than

  the crust found near the

  mid-Atlantic ridge.

• When mapped, the majority of

  earthquakes around the world

  are located at a plate boundary.

• All rocks located on the floor of

  the Atlantic Ocean are younger

  than 180 million years.

• All volcanoes that occur over a

  hotspot are not associated with

  plate boundaries.

• Rocks made of basalt, which all

  formed at the same time, point

  to the same magnetic north.

• Historical climate maps show the

  climates of Antarctica and Northern

  Africa were once the same.

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TEKS.SCI.7.10A

Consider the diagram of seafloor spreading at a mid-ocean ridge. Which statement correctly describes the diagram?

• Band A is older than band C.

• Band B is younger than band D.

• Band C is younger than band A.

• Band D is older than band E.

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TEKS.SCI.7.10A

Which statement is best supported by the diagram?

• Band A is closer to seafloor spreading, so it is older than band C.

• Band B is closer to seafloor spreading, so it is younger than band D.

• Band C is closer to band E, so it is younger than band A.

• Band D is farther from continental crust, so it is older than band E.

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TEKS.SCI.7.10A

Three different types of tectonic plate boundaries are shown below. Match these diagrams to their descriptions.

• Magma rises between 2 plates and cools.

• 
• Earthquakes result from stress here.

• 
• Mountain ranges are created by collision

• 

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TEKS.SCI.7.10B

When two tectonic plates move past each other without converging or diverging, what is most likely to occur?

• A volcanic eruption

• A mountain formation

• A typhoon

• An earthquake

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TEKS.SCI.7.10B

The mid-Atlantic ridge is a mostly underwater mountain range located in the Atlantic Ocean. Scientists have made some amazing discoveries near the mid-Atlantic ridge which led to understanding how it was formed. Place the series of events in the correct order below.

• Molten rock arose from the magma and filled the gap between the plates.

• The ridge where the North American and Eurasian plates meet diverged, moving away from

  each other.

• Magma hardened and formed new crust along the edges of the plates.

• Oceanic crust was pushed further from the ridge and closer to the continental crust.

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TEKS.SCI.7.10B

The diagram shows the formation of an ocean basin due to plate tectonics. Which statement describes how plate tectonics causes ocean basin formation?

• Magma pushes plates upward and fills the center of the ocean floor.

• Heat causes plates to move apart, allowing magma to rise and solidify.

• Continental crust subducts and magma fills trenches.

• Continental crust moves apart at trenches exposing magma.

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TEKS.SCI.7.10B