Earth Science Chapter 3 Review

Question 1

Mountain ranges that run along the middle of some ocean floors are called

Accepted Answer

mid-ocean ridges

Question 2

At which type of boundary do plates move apart?

Accepted Answer

divergent

Question 3

Where do Earth's plates meet?

Accepted Answer

at boundaries

Question 4

The theory of plate tectonics states that Earth's plates constantly move because of

Accepted Answer

convection currents in the mantle

Question 5

As sea-floor spreading adds more crust, the older rock moves outward away from the ridge.

Accepted Answer

True

Question 6

Deep underwater canyons on the ocean floor are called

Accepted Answer

deep-ocean trenches

Question 7

The sizes of Earth's oceans are grow and shrink because of subduction and sea-floor spreading.

Accepted Answer

True

Question 8

The process in which new material is added to the ocean floor at mid-ocean ridges is called

Accepted Answer

sea-floor spreading

Question 9

Rift valleys form on the ocean floor.

Accepted Answer

False

Question 10

Any trace of an ancient organism that has been preserved in rock is called a

Accepted Answer

fossil

Question 11

Plates slips past each other at

Accepted Answer

transform boundaries

Question 12

Breaks in the Earth's crust where rocks have slipped past each other are called

Accepted Answer

faults

Question 13

During subduction the ocean floor sinks back into Earth's core.

Accepted Answer

False

Question 14

What forms at transform boundaries?

Accepted Answer

nothing

Question 15

Alfred Wegener's hypothesis became known as

Accepted Answer

continental drift

Question 16

Which of the following is not used as evidence for sea-floor spreading?

Accepted Answer

fossils

Question 17

Which of the following is not a type of boundary found on Earth?

Accepted Answer

ridge

Question 18

When plates collide at convergent boundaries, what forms?

Accepted Answer

mountains

Question 19

At which type of boundary do plates come together?

Accepted Answer

convergent

Question 20

Which of the following was not a type of evidence Wegener used for his hypothesis?

Accepted Answer

rocks

Question 21

What process occurs at deep-ocean trenches?

Accepted Answer

subduction

Questions 21