Plate Tectonics Review

What forms when oceanic plates move apart from each other (diverge)?

• New crust/seafloor is formed at places called mid-ocean ridges OR rift valleys form in the middle of a continental plate

• Volcanoes form on the land along edges of plate boundaries

• Mountains form because of the uplift of material

• Faults, like San Andreas, form

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Iceland is in the middle of the Atlantic Ocean. It has a great deal of volcanic activity due to -

• the American plate diving under the European plate.

• two tectonic plates rubbing against each other.

• it was formed directly above the mid-Atlantic ocean ridge, which is where the North American and Eurasian plates are diverging.

• its location as part of the Ring of Fire, which surrounds the Pacific Ocean.

A mid-ocean ridge is located at the boundary of two oceanic plates. Which diagram correctly models the relative plate motion on each side of a mid-ocean ridge?

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NGSS.MS-ESS2-2

If a planet was discovered that had tectonic plates that moved MORE rapidly than those on Earth, which process most likely is also occurring more rapidly?

• tidal changes in the oceans

• formation of sedimentary rock

• convection currents in the mantle

• erosion of mountains

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NGSS.MS-ESS2-3

Scientist believe that convection currents in the upper portion of the mantle called the ______ are responsible for the movement of the plates that form the Earth's crust.

• asthenosphere

• lithosphere

• inner core

• outer core

Tags

NGSS.MS-ESS2-3

In an area known as The Ring of Fire, chains of volcanoes have formed all around the Pacific Ocean. What most likely caused this to happen?

• Convergent plate boundary

• Divergent plate boundary

• Transform plate boundary

• Hot Spot

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NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

According to the diagram shown above, which number represents the part of the ocean floor that is the youngest (newest ocean floor)?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The Aleutian Arc is a large volcanic arc which consists of a grouping of active and dormant volcanoes that have formed along the Aleutian Trench.

The Aleutian Arc is a distinguishing feature of the state of Alaska illustrated above. Alaska is part of the North American Plate. To the South of the Aleutian Arc is the Pacific Plate. The Aleutian Arc was formed as the Pacific Plate traveled North and the North American Plate traveled West.

Based on the information above, which type of plate boundary caused the formation of the Aleutian Arc?

• Divergent Boundary

• Tranform Boundary

• Convergent Boundary

• Strike-Slip Fault Boundary

Tags

NGSS.MS-ESS2-2

Based on the map, volcanic activity would most likely be found at-

• Location W

• Location X

• Location Y

• Location Z

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-ESS3-2

Which of these landforms is most likely to be found at a convergent boundary? Select TWO answers.

• trench

• mid- ocean ridge

• mountains

• rift valley

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3