What I Know
Direction: Choose the letter of your answer. Write the letter of your answer on your
answer sheet.
1. What is a tsunami?
a. A force that travels in the seafloor that results to a crack.
b. A water wave produced by a sudden push from an underwater fault.
C. A water wave generated from horizontal movement of fault.
d. A force that is created within the water that is passed to ocean surface.
2. Where can you witness a natural event such as tsunami?
a. lake
b. hot spring
c. ocean
d. river
3. What is the best thing to do if you experience an earthquake near the sea?
a. Swim to the sea
b. Stay inside the house located near the sea
c. Run to the highest place you can find
d. Do not move from the place where you are located
4. What causes tsunami?
a. whales that are swimming
c. sinking ship
b. flood
d. underwater earthquake
5. Which of the following direction of fault movement results to tsunami?
a. vertical
b. horizontal C. diagonal
d. sideways
6. Tsunami is a
word.
a. Australian
b. Malaysian
c. Chinese
d. Japanese
7. When tsunami is approaching the seashore, what happens to its speed?
a. increases
b. decreases c. no changed d. limited
8. What is the meaning of 'tsu' from the word tsunami?
a. harbor
b. wave
C. water
d. coast
9. Which of the following is NOT a sign that tsunami is generated?
a. Severe ground shaking
b. Drop or sudden change in the sea level
c. Fishes swim towards the seashore
d. Unusual sound coming from the sea
10. Tsunami can occur
a. only in the morning
c. only in the evening
d. any time of the day and night
b. only in the summer nights
11. Which statement below is NOT true?
a. Tsunami waves are different from ordinary waves.
b. Tsunami waves have a lot of energy.
c. Small tsunami waves are not dangerous.
d. Not all earthquake will generate a tsunami.
12. What is the meaning of 'nami' in the word tsunami?
a.wave
b.water
c.harbor
d.destructive
13. According to PHIVOLCS, an unusual coming from the ocean is an
impending sign of tsunami.
a. wind
b. sound
c. movement d. water
14. What sign of an impending tsunami is shown in the given illustration?
a. shaking of seafloor
b. roaring sound from the sea
c. drawback of ocean water
d. ocean blue color
15. Which of the following places is most likely to experience tsunami?
a. Samar
b. Vigan
c. Tarlac
d. Davao
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