Earth Science Worksheet - Island Arcs and Plate Tectonics

Base your answer to the following question on the passage below and on your knowledge of Earth science. Island arcs are long, curved chains of oceanic islands associated with seismic activity and mountain-building processes at certain plate boundaries. They occur where oceanic tectonic plates collide. Along one side of these island arcs, there is usually a long, narrow deep-sea trench. At island arcs, the denser plate is subducted and is forced into the partially molten mantle under the less dense plate. The islands are composed of the extrusive igneous rocks basalt and andesite. The basalt originates most likely from the plastic mantle. The andesite originates most likely from the melting of parts of the descending plate and sediments that had accumulated on its surface. An island arc is found along the

• East Pacific Ridge

• Aleutian Trench

• Iceland Hot Spot

• Peru-Chile Trench

Tags

NGSS.HS-ESS1-5

At the Aleutian Trench and the Peru-Chile Trench, tectonic plates are generally

• moving over a mantle hot spot

• diverging

• moving along a transform boundary

• converging

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Which two hot spots are located on the same tectonic plate?

• Tasman and Easter Island Hot Spots

• Hawaii and Yellowstone Hot Spots

• Iceland and Bouvet Hot Spots

• Canary Islands and St. Helena Hot Spots

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

According to tectonic plate maps, New York State is presently located

• above a mid-ocean ridge

• near the center of a large plate

• above a mantle hot spot

• at a convergent plate boundary

Tags

NGSS.HS-ESS1-5

Which geologic feature is composed of the youngest crustal bedrock?

• Peru-Chile Trench

• Adirondack Mountains

• Mid-Atlantic Ridge

• San Andreas Fault

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

The map below shows some tectonic plate boundaries near South America and Africa. Letters A, B, C, and D represent locations on Earth's surface. Which location most likely has the youngest bedrock?

• A

• B

• C

• D

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The border between the South American plate and the African plate is best described as

• converging and located at an oceanic ridge

• diverging and located at an oceanic trench

• diverging and located at an oceanic ridge

• converging and located at an oceanic trench

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which type of tectonic plate boundary is represented in the cross-section?

• divergent

• transform

• complex

• convergent

Tags

NGSS.MS-ESS2-3

Compared to the oceanic crust, the continental crust is

• more dense and more felsic

• more dense and more mafic

• less dense and more felsic

• less dense and more mafic

The block diagram below represents the formation of an island arc near a plate boundary. An island arc is located near the boundary between which two tectonic plates?

• African Plate and North American Plate

• Antarctic Plate and Indian-Australian Plate

• Philippine Plate and Eurasian Plate

• Scotia Plate and South American Plate

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3