Earth's Dynamic Crust

The point of the earths surface directly above the point where an earthquake occurs is called the:

• Focus

• Epicenter

• Fracture

• Fault

Which block diagram to the right best shows a transform fault?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS2-3

Which cross section shows the inferred movement of material in the asthenosphere beneath points X and Y?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-3

When two tectonics plates collide, oceanic crust usually subducts beneath continental crust because oceanic crust is composed of igneous rocks that has

• low density and is mafic

• low density and is felsic

• high density and is mafic

• high density and is felsic

Alternating parallel bands of normal and reversed magnetic polarity are found in the basaltic bedrock on either side of the

• Mid-Atlantic Ridge

• Yellowstone Hot Spot

• San Andreas Fault

• Peru-Chile Trench

Tags

NGSS.MS-ESS2-3

In which cross section below do the arrows best show the convection occurring within the asthenosphere beneath line XY?

• 1

• 2

• 3

• 4

Samples of ocean floor bedrock were collected at points A, B, C and D. Which sequence shows the correct order of the age of the bedrock from oldest to youngest?

• D>C>B>A

• A>D>B>C

• C>B>D>A

• A>B>D>C

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

The boundary between which two tectonic plates is most similar geologically to the plate boundary at the Mid-Atlantic Ridge?

• Eurasian and Indian-Australian

• Nazca and South American

• Pacific and Nazca

• Cocos and Caribbean

Tags

NGSS.MS-ESS2-3

Which map to the right best indicates the probable locations of continents 100 million years from now if tectonic plate movement continues at its present rate and direction? (answer can be found in ESRT)

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS2-3

Which observation about the Mid-Atlantic Ridge region provides the best evidence that the seafloor has been spreading for millions of years?

• the bedrock of the ridge and nearby seafloor is igneous rock

• the ridge is the location of irregular volcanic eruptions

• several faults cut across the ridge and nearby seafloor

• seafloor bedrock is younger near the ridge and older farther away

Tags

NGSS.HS-ESS1-5