EARTHQUAKE AND FAULTS _LONG QUIZ #2.pptx

EARTHQUAKE AND FAULTS

1. Earthquakes and Fault Quiz #1

2. Part 1 Multiple choice

3. A. fault B. focus  C. epicenter D. fault plane 1. Which refers to the origin of the earthquake?

4. A. Faults form as the Earth’s crust deforms due to stress. B. Earthquake is a matter of it and not a matter of when. C. The earth’s crust is unbroken even if there are compressions and tensions. D. Tectonic plates do not move if rocks are stretched, compressed or crushed. 2. Which of the following statement is true about earthquake?

5. A. strike-slip fault – the hanging wall moves upward. B. normal fault – the hanging wall moves downward. C. reverse fault – walls move sideways not up or down. D. oblique-slip fault – walls move horizontally in opposite directions. 3. Which is correctly matched?

6. A. compression B. parallel C. shearing D. tension 4. Which of the following forces will happen when rocks are pulled away from each other?

7. A. It is the location where the fault begins to slip. B. It is the area where layers of rocks break into two. C. It is the trace of the fault on the surface of the Earth. D. It is the flat surface along which there is slip during an earthquake. 5. Which statement best describes a fault plane?

8. A. Epicenter is also called hypocenter or focus. B. Epicenter is the point where the focus of the earthquake originates. C. Epicenter is in the surface of the earth that is directly below the focus. D. Epicenter is in the surface of the earth that is directly above the focus. 6. Which is correct about focus and epicenter?

9. A. Magnitude is determined by using Rossi- Forel Scale while intensity is measured by seismographs. B. Magnitude uses Roman numerals (I, II, III), whereas intensity uses Hindu-Arabic numerals (2, 3, 4). 7. How do magnitude and intensity differ?

10. C. Magnitude is determined by observing the effects of the earthquake in people and places while intensity is calculated by the scientists based on earth’s released energy. D. Magnitude is a quantitative measure of the energy released during the earthquake while intensity is a qualitative measure of the strength of the earthquake at a certain location. 7. How do magnitude and intensity differ?

11. A. near the epicenter B. away from the epicenter C. left of the epicenter D. right of the epicenter 8. When an earthquake occurs, different places experience different intensities. When an earthquake happens, where should shaking be greater ?

12. A. active fault B. inactive fault C. normal fault D. reverse fault 9. Which refers to the fault that generated earthquakes within 10,000 years and is capable of moving again?

13. A . They are surrounded by seas. B. They are located near the equator. C. They are considered archipelagic countries. D. They are found within the Pacific Ring of fire. 10. Earthquakes are common occurrence in Japan, Indonesia, and Philippines. Why is this so?

14. Part 2 Identification

15. Identify the following types of fault 11 12 13

16. Identify the following type of stress 14 15 16

17. Part 3 ENUMERATION

18. 17-20 Enumerate four (4) safety precautions during an earthquake