Characteristics of the Seafloor

Question 1

Use the drop-down menus to complete each statement.

Revolt · Accepted Answer

crust; Scientists discovered that new molten materials from inside Earth create new .: crust; Rocks closest to the center of a mid-ocean ridge are than those that are farther away.: younger

Question 2

Rocks closest to the center of a mid-ocean ridge are than those that are farther away.

Revolt · Accepted Answer

younger

Question 3

Through the process of , old, dense crust is pushed toward a deep-ocean . There, it sinks under lighter crust. It returns to molten rock, becoming part of the again.

Revolt · Accepted Answer

mantle

Question 4

Fill in the blanks to complete the passage.

Revolt · Accepted Answer

⇒ subduction: subduction; -: trench; ⇒ mantle: mantle

Question 5

Through the process of , old, dense crust is pushed toward a deep-ocean . There, it sinks under lighter crust. It returns to molten rock, becoming part of the again.

Revolt · Accepted Answer

trench

Question 6

Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading?

Revolt · Accepted Answer

The pattern of magnetic stripes shows that the seafloor is expanding at mid-ocean ridges.

Characteristics of the Seafloor Answers

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