Earthquakes

1. What is the name of the instrument that records earthquake waves?

Seismograph Seismogram

Seismograph

2. What type of plate motion is it when 2 plates move away from each other, causing weak, shallow earthquakes?

Divergent

Convergent

Transform

Divergent

3. What type of plate motion is it when 2 plates move toward or into each other, causing strong, deep earthquakes?

Divergent

Convergent

Transform

Convergent

4. What type of plate motion is it when 2 plates slide past each other, causing shallow, moderate earthquakes?

Divergent

Convergent

Transform

Transform

5. The picture of the seismic waves recorded are called?

Seismograph Seismogram

Seismogram

6. Which part of the earthquake can be located far below the earth’s surface?

Epicenter Focus

Focus

7. What do you call sections of a fault that have very little earthquake activity?

Plastic rebound Elastic rebound Seismic gap

Seismic Gap

8. What type of gas and water lines are being used in areas where earthquakes are likely to occur?

Flexible pipes, like a bendy straw.

9. The bending of rock is also called

Deformation Moho Shadow zone

Deformation

10. Where do the strongest earthquakes usually occur?

At divergent boundaries At transform boundaries At convergent boundaries

At convergent plate boundaries

11. Where should you go if you are in a building when an earthquake occurs?

Outside Into the hallway Under a piece of furniture

Under a table or any furniture in the middle of the room.

12. Where are most strike-slip faults located?

At divergent boundaries At transform boundaries At convergent boundaries

Along transform boundaries

13. What are the characteristics of “P” or Primary waves?

They can travel through solids, liquids, and gases.

They can’t travel through liquid They travel the fastest and arrive first They travel fast but arrive second after

“S” waves.

P waves are the fastest, they arrive first, they can travel through solids, liquids, and gas.

14. What causes the ground to move during an earthquake?

Plastic deformation Elastic rebound Stress Tectonic force

Elastic Rebound

15. What do Seismologists study?

Volcanoes Earthquakes ( Seismic waves)

Earthquakes

16. Body waves are the two fastest seismic waves they include.....

P waves (primary) S waves (secondary) Surface waves

S & P waves

17. These waves travel slower and cause the most damage.

P waves S waves Surface waves

Surface waves

18. The actual point down in the earth where the rocks shift and start an earthquake is called…..

Epicenter Moho Shadow zone Focus

The focus

19. This is located directly above the focus, it is the point on the surface of the earth where the earthquake occurred.

Epicenter Moho Shadow zone Focus

Epicenter

20. When rock is _________, energy builds up in it. Seismic waves occur as this energy is __________.

Elastically deformed, released.

21. If you are outside when an earthquake begins to occur what should you do?

Lie face down away from buildings.

22. If the S waves arrive a long time after the P waves this tells you that the earthquake is probably:

Close to the seismograph Far away from the seismograph

Far away from the seismograph.

23. Where do most earthquakes usually occur?

Along the edges of the earth’s continents

Along the edges of the earth’s oceans Along the edges of the earth’s tectonic

plates

Along the edges of the earth’s tectonic plates.

24. A scientist that studies earthquakes is called a

Volcanologist Seismologist Biologist

Seismologist

25. Giant masses of the earth’s crust that make up the outermost part of the crust are called:

Tectonic plates