21. How will you observed the strength of the shaking effect of an earthquake from the surface of the Earth?
A. By its Epicenter
B. By its Fault line
C. By its Intensity
D. By its Magnitude

22. Which of the following is used to measure the intensity of the earthquake through its shaking effect?
A. Digital Scale
B. Mercalli Scale
C. Richter Scale
D. Weighing Scale

23. From what area where the movement from the ocean trenches, volcanic eruption, and epicenters of the earthquake happen along the boundaries of tectonic plates?
A. Continental Drift
B. Fault line
C. Plate boundaries
D. San Andreas Fault

24. To the following statement below, what do you think is the best description about the prediction of earthquake?
A. Scientist can accurately predict the time and location of about 50% of all earthquakes.
B. Scientist can accurately predict the time and location of almost all earthquakes.
C. Scientist can accurately predict when an earthquake will occur, but no exact area.
D. Scientist can accurately predict the seismic risk in an area, but cannot predict the exact time to when earthquake will Occur.

25.Which of the following is TRUE about the Focus of an earthquake? .
A. It is the location above the Earth’s surface where earthquake starts.
B. It is the location below the Earth’s surface where earthquake starts
C. The location of Earth’s surface directly above the epicenter.
D. The location of Earth’s surface at the side of epicenter