5.2 Earthquake Measurement

Question 1

an instrument that records vibrations in the ground and determines the location and strength of an earthquake

Answer 1

seismographs

Question 2

a tracing of earthquake motion that is created by a seismograph

Answer 2

seismogram

Question 3

the point on Earth’s surface directly above an earthquake’s starting point, or focus

Answer 3

epicenter

Question 4

the point along a fault at which the first motion of which an earthquake occurs

Answer 4

focus

Question 5

the simplest method by which seismologists find an earthquake’s epicenter

Answer 5

S-P time method

Question 6

seismologists commonly used this during the 20th century to measure the strength of earthquakes

Answer 6

Richter magnitude scale

Question 7

a measure of strength of an earthquake

Answer 7

magnitude

Question 8

a measure of the degree to which an earthquake is felt by people and the amount of damage cause by and earthquake, if any

Answer 8

intensity