Ages of Seafloor, Features at Boundaries, and Paleomagnetism

1.

Multiple Choice

30 sec

1 pt

The Earth's crust/lithosphere is broken up into pieces called _______.

Tectonic Plates

Tectonic Pieces

Plate Boundaries

Crust Plates

2.

Multiple Choice

30 sec

1 pt

The area around the Pacific Ocean where there are lots of earthquakes and volcanoes is called

Ring of Earth

Ring of Fire

Lord of the Rings

Himalayan Mountains

3.

Multiple Choice

30 sec

1 pt

What is the best explanation for why oceanic crust is subducted by continental crust?

The oceanic crust is cooler than continental crust.

Continental crust is denser than oceanic crust.

Oceanic crust is denser than continental crust.

The oceanic crust is hotter than continental crust.

4.

Multiple Choice

30 sec

1 pt

What type of boundary formed the East African Rift Valley?

divergent

convergent

transform

adjacent

5.

Multiple Choice

1 min

1 pt

What is occurring at A?

volcano

mid-ocean ridge

trench

subduction

6.

Multiple Choice

1 min

1 pt

What type of crust is B?

oceanic

continental

7.

Multiple Choice

30 sec

1 pt

What occurs at all types of plate boundaries?

earthquakes

subduction

seafloor spreading

volcanoes

8.

Multiple Choice

30 sec

1 pt

Name the type of boundary is illustrated.

divergent

convergent

transform

subduction

9.

Multiple Choice

30 sec

1 pt

The OLDEST seafloor is located?

Closest to the mid-ocean ridge

Farthest from the mid-ocean ridge

East of Hawaii

West of California

10.

Multiple Choice

30 sec

1 pt

Seafloor spreading...

creates new crust

destroys or recycles crust

was discovered by Wegener.

creates old crust

11.

Multiple Choice

30 sec

1 pt

Rocks at the mid ocean ridges...

are the oldest rock on the earth.

are older than continental rock.

are younger than continental rock.

12.

Multiple Choice

30 sec

1 pt

In the Atlantic ocean, where is the youngest seafloor located?

Towards the edges, near the eastern and western continents

Towards the middle of the ocean

Towards the north and south poles

Young seafloor is located randomly throughout the ocean

13.

Multiple Choice

30 sec

1 pt

This theory states Earth's plates move on top of the mantle at a slow constant rate

Plate Tectonics

Continental Drift

Superposition

Pangaea

14.

Multiple Choice

45 sec

1 pt

The San Andreas fault is an example of

a convergent boundary

a divergent boundary

a transform boundary

strike-slip fault

15.

Multiple Choice

30 sec

1 pt

The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is_____________.

a mirror image of that other side

younger than other side

much different pattern

at right angles to the ridge

16.

Multiple Choice

30 sec

1 pt

The study of the Earth's magnetic record

ridge push

convection

paleomagnetism

subduction

17.

Multiple Choice

30 sec

1 pt

A change in Earth' s magnetic field

magnetic reversal

subduction

paleomagnetism

slab pull

18.

Multiple Choice

30 sec

1 pt

How does Pangaea provide evidence for plate tectonics?

it doesn't

it shows how fast the plates move

it shows that the continents once fit together into a giant super continent

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