8 When an earthquake occurs different places experience different intensities Whe
an earthquake happens where should shaking be greater?
A near the epicenter
C left of the epicenter
B away from the epicenter
D right of the epicenter
Which refers to the fault that generated earthquakes within 10,000 years and is
capable of moving again?
A active fault B. inactive tault
C normal fault
10 How do you call the 1200 km fault zone in the country that moves across the
archipelago?
A Central Marinduque Fault
C. Valley Fault System
B. Philippine Fault Zone
D West llocos Fault System
11 Which fault system runs in Metro Manila?
A Casiguran Fault
C Lubang Fault
B Digdig Fault
D. Valley Fault System
12. Scientists use different ways to find out if a fault is active Which of following ways
are helpful in studying faults?
Checking the country's historical records
Il Studying vibrations that come from faults
al Collecting rock samples from bodies of water
IV Studying the strength of soil and flow of water
Aland I
Bland 1
Cland IV
D. II and IV
13 What is the relationship between the densities of the earth's crust with the speed of
seismic waves
A The greater the density of the earth's crust, the faster the seismic wave moves
B. The greater the density of the earth's crust the slower the seismic wave
moves
c The speed of the seismic wave does not change with respect to the changes in
density of the crust
D. As the seismic wave travels to the liquid part of the crust, the density does not
change but the speed of the seismic wave increases.
14. Why does tsunami not always occur when there is earthquake?
A Because the focus is always located underwater
B. Because land earthquakes are connected to underwater earthquakes
C. Because the magnitude of an earthquake needs to be 6.5 and above
D. Because the fault movement underwater maybe in horizontal direction or
sideways?
15 Which statement does not correctly describe tsunami?
A Tsunami is a series of waves travelling across the ocean.
8. Tsunami has short wavelength which is usually 5 to 10 meters in length
C As tsunami moves into shallow water, the height of the wave increases.
D. Tsunami happens due to a sudden displacement of a large body of water.
16. How is primary wave related to secondary wave?
A They are both travelling through the crust of the earth
B. They are both body waves that travel through earth's interior
C. They are both surface waves that can move in the surface of the earth.
D They are both having lesser frequency than Love wave and Rayleigh wave.

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