Focus On Earth Science: California Grade 6

Lesson 2: Earthquakes and Seismic Waves

Standards Check

1.
To locate the epicenter of an earthquake, the distances to at least _______ seismographs must be measured. 1.g
A)two
B)three
C)four
D)five
2.
During an earthquake, surface waves _______. 1.g
A)travel faster than secondary waves
B)usually cause the least damage
C)travel faster than primary waves
D)usually cause the most damage
3.
Primary waves cause rock particles to move _______. 1.g
A)in a rolling motion
B)perpendicular to the direction the wave is traveling
C)back and forth along the direction the wave is traveling
D)in a side-to-side swaying motion
4.
Seismic waves travel outward from the _______ of an earthquake. 1.g
A)focus
B)epicenter
C)shadow zone
D)fault zone
5.
The energy carried by seismic waves _______ as the waves travel outward. 1.g
A)causes surface waves to travel faster than secondary waves
B)increases
C)decreases
D)causes secondary waves to travel faster than primary waves
Grade 6
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