Name: ____________________________ Block: _____ Date: _________________________________
EARTH SCIENCE 11
Chapter 15 Earthquakes
Review
Exercise 1: For each of the following, choose the phrase in column B that best describes the term in
column A, and mark its letter in the blank space.
Column A
Column B
_____
1.
Earthquake
a. Point on Earth’s surface directly above an earthquake
_____
2.
Tsunami
b. Boundary between two tectonic plates
_____
3.
Fault plane
c. Place where neither P-waves nor S=waves are received
_____
5.
Elastic rebound
d. Waves vibrating in their direction of travel
_____
6.
Focus
e. Waves vibrating perpendicular to their travel direction
_____
7.
Epicenter
f.
_____
8.
P-waves
g. Waves that move along the ground like ripples
_____
9.
S-waves
h. Shaking of the ground by seismic waves
_____
10. L-waves
i.
Snapping of plates to their equilibrium positions
_____
11. Shadow zone
j.
Point inside Earth where an earthquake actually occurs
Waves caused by the movement of the sea floor
Exercise 2: For each of the following statements, fill the blank space with the word that best completes
the statement.
1. A rupture or break in Earth’s crust is called a(n) ______________________________.
2. Earthquakes are recorded by instruments called _______________________________.
3. An earthquake may occur at depths less than ____________________ kilometers below the
surface.
4. The waves that move at the greatest speed through Earth are ______________________.
5. The point within Earth where the rocks snap is the _______________ of the earthquake.
6. Earthquakes are measured on the ____________________ scale.
7. Two main reasons why buildings collapse during earthquakes are from __________________
__________________ and ________________ __________________.
8. The three things about earthquakes that seismologists hope to succeed in predicting are
___________, ___________, and the ________________ of the quake.
9. The Mohorovicic discontinuity was discovered because P and S waves abruptly ______________
_____________ below that depth.
10. The New Madrid, Missouri, earthquakes of 1811-1812 were not related to plate boundaries, but
to the ____________________.
Name: ____________________________ Block: _____ Date: _________________________________
EARTH SCIENCE 11