Chapter 25

Question 1

mountain ranges on the seafloor separated by valleys

Answer 1

Mid-ocean ridge

Question 2

the faulting causes twin mountain ranges with a long and narrow depression

Answer 2

rift valley

Question 3

The boundary where two plates collide

Answer 3

convergent plate boundary

Question 4

When a thick and buoyant continental plate meets a thin and dense oceanic plate, the denser plate dives beneath the continent

Answer 4

subduction

Question 5

The boundary between two plates that move apart along the mid-ocean ridge

Answer 5

divergent plate boundary

Question 6

Boundary where plates slide horizontally past each other in opposite directions

Answer 6

Transform plate boundary

Question 7

A sudden movement of the ground that occurs when rocks slip along cracks in the Earth’s crust called faults

Answer 7

Earthquake

Question 8

A crack in the Earth’s crust along which the rocks moves

Answer 8

Fault

Question 9

Produces energy called seismic waves that travel in the Earth

Answer 9

Elastic rebound

Question 10

The point of origin for an earthquake

Answer 10

Focus

Question 11

The point on Earth’s surface directly above the focus

Answer 11

epicenter

Question 12

Who came up with the continental drift hypothesis?

Answer 12

Wegener

Question 13

Evidence that Wegener found to support his hypothesis.

Answer 13

1. coast lines match up like puzzle pieces
2. Large land animal fossils
3. Mountain ranges match up and the rocks are made up of the same composition and age