Earthquakes

Question 1

The vibration of Earth produced by rapid release of energy.

Answer 1

Earthquake

Question 2

The point within Earth where the earthquake starts.

Answer 2

Focus

Question 3

The location on the surface directly above the focus

Answer 3

Epicenter

Question 4

Are fractures in Earth where movement has occurred.

Answer 4

Faults

Question 5

Are instruments that record earthquake waves.

Answer 5

Seismograph

Question 6

Are traces of amplified, electronically time record of ground motion made by seismographs.

Answer 6

Seismogram

Question 7

Energy transmitted by vibration that travel in all directions from the focus through the material that makes up the lithosphere, mantle and core.

Answer 7

Seismic Wave

Question 8

Are seismic waves that travel along Earth’s outer layer.

Answer 8

Surface Waves

Question 9

Are seismic waves that push (compress) and pull (expand) in the direction that the waves travel, travels through solids, liquids, and gases and has the greatest velocity of all earthquake waves.

Answer 9

Primary (P) Waves

Question 10

Are seismic waves that shake particles at right angles to the direction that they travel, travels only through solids and has slower velocity than P waves.

Answer 10

Secondary (S) Waves

Question 11

Is the most widely used measurement for earthquakes because it is the only magnitude scale that estimates the energy released by earthquakes. Measure large earthquakes.

Answer 11

Momentum Magnitude

Question 11

Is a measurement of earthquakes based on the amplitude of the largest seismic wave. Doesn’t measure large earthquakes.

Answer 11

Richter Scale

Question 11

Trigger by an earthquake occurs where a slab of ocean floor is displaced vertically along a fault.

Answer 11

Tsunami