Earth Science Chapter 3 Review

Question 1

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

Accepted Answer

True

Question 2

Plates slips past each other at

Accepted Answer

transform boundaries

Question 3

At which type of boundary do plates move apart?

Accepted Answer

divergent

Question 4

What forms at transform boundaries?

Accepted Answer

nothing

Question 5

Alfred Wegener's hypothesis became known as

Accepted Answer

continental drift

Question 6

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

Accepted Answer

fossils

Question 7

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

Accepted Answer

ridge

Question 8

Where do Earth's plates meet?

Accepted Answer

at boundaries

Question 9

What process occurs at deep-ocean trenches?

Accepted Answer

subduction

Question 10

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

Accepted Answer

True

Question 11

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

Accepted Answer

rocks

Question 12

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

Accepted Answer

False

Question 13

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

Accepted Answer

faults

Question 14

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

Accepted Answer

mid-ocean ridges

Question 15

When plates collide at convergent boundaries, what forms?

Accepted Answer

mountains

Question 16

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

Accepted Answer

convection currents in the mantle

Question 17

Deep underwater canyons on the ocean floor are called

Accepted Answer

deep-ocean trenches

Question 18

Rift valleys form on the ocean floor.

Accepted Answer

False

Question 19

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

Accepted Answer

sea-floor spreading

Question 20

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

Accepted Answer

fossil

Question 21

At which type of boundary do plates come together?

Accepted Answer

convergent

Questions 21