4. At what magnitude can an earthquake cause displacement of buildings and cracks on the Earth's surface?
A. magnitude 4 B. magnitude 5 C. magnitude 6 D. magnitude 7
5. Where is an earthquake's epicenter found?
A. directly above the focus
B. directly above the magnitude
C. directly below the focus
D. directly below the magnitude
6. Which of the following events causes an earthquake?
A. too much heat from the sun
B. movement of crustal plates
C. changing temperatures
D. mixtures of crustal plates
7. Where does an earthquake originate?
A. epicenter
B. focus
C. intensity
D. magnitude
8. What does PHIVOLCS mean?
A. Philippine Institute of Volcanology
B. Philippine Institute of Volcanologists
C. Philippine Institute of Volcanology and Seismology
D. Philippine Institute of Volcanologists and Seismologists
9. Which of the following refers to the ground above the focus?
A. epicenter
B. focus
C. seismology
D. volcanology
10. What is the scale used by PHIVOLCS to measure the intensity of an earthquake?
A. Richter Scale
B. Richter Scale
C. Richter Scale
D. Richter Scale
11. Which layer of the Earth is the thickest?
A. inner core
B. outer core
C. mantle
D. crust