12. An earthquake measuring 3.5 on the Richter Scale is likely to produce what effect? a. Strongly built buildings and houses will collapse.
b. Shock waves will be visible on the ground.
c. Weak structures and walls will fall.
d. Windows, furniture and fragile objects will rattle.

16. According to seismologists, an active fault is one that has?
a. Confined only in the lower part of the sediments
b. Moved in the past and capable of causing more movement in the future
c. Moved from the past long years and unlikely to move again
d. Not cut across the stream channel or not slice through mountain and cliffs

18. Which of the ff. can be an indication of having an active fault?
a. A ONLY
b. B ONLY
c. A AND C ONLY
d. A, B AND C