Lesson 3: Earthquake

Question 1

Release of energy due to pressure in earth’s crust.

Answer 1

Earthquake

Question 2

used to find the epicenter of an earthquake.

Answer 2

Triangulation method

Question 3

the slipping of a block of earth’s crust with another block.

Answer 3

Fault

Question 4

The origin at which the earthquake occurs.

Answer 4

Hypocenter or focus

Question 5

point directly above the focus on the surface.

Answer 5

Epicenter

Question 6

travel along and within the lithosphere.

Answer 6

Seismic waves

Question 7

instrument that detects and measures seismic waves

Answer 7

Seismograph

Question 8

in the form of primary or secondary waves.

Answer 8

Body waves

Question 9

travel through the interior of earth and through solid and fluid materials.

Answer 9

Primary waves or compressed waves (P-waves)

Question 10

travel through solid materials only within the interior of Earth.

Answer 10

Secondary Waves or transverse waves (S- waves)

Question 11

a side to side movement

Answer 11

Love wave (L-waves)

Question 12

up and down movement.

Answer 12

Rayleigh waves (R-waves)

Question 13

quantitative measure of the amount of energy released by an earthquake

Answer 13

Magnitude