What I Know Directions: Choose the letter of the correct answer. Write your answers on a separate sheet of paper. 1. Where is the epicenter located in the illustration? A. 1 B. 2 C. 3 D. 2 and 3 Illustrated by: Angelo Zaldy C. Francia 2. What point on Earth's surface is directly above the focus? A. Epicenter B. Fault C. Focus D. Magnitude 3. What is focus? A. center of the earth B. end of the seismic waves C. surface of the earth where the wave starts D. location where an earthquake’s waves begin 4. Which of the following describes an active fault? A. no earthquake occurs B. no record of earthquake C. expected to generate earthquake D. generates earthquake once in a million of years 5. Which point is closest to the epicenter? A. Point A B. Point B C. Points A and B D. Points B and C 2 CO_Q2_Science 8_ Module 2
6. What scale measures the magnitude or size of an earthquake? A. Mercalli scale B. Richter scale C. Spring scale D. Weighing scale 7. What is referred to as a measure of the amount of energy released in an earthquake? A. Intensity B. Magnitude C. Stress D. Tension 8. Which of the following statements refers to the magnitude scale? A. It measures the effect of an earthquake on a given area. B. It is a negative impact of the earthquake on surrounding areas. C. It is the devastation caused by an earthquake varies with location. D. It is the quantified value of seismic energy produced during an earthquake. 9. What is the description of a 5.0 – 5.9 magnitude in a Richter scale? A. light B. major C. moderate D. strong 10. In which of these places will an intense earthquake likely happen? A. near a mountain B. along active fault C. near coastal area D. along inactive fault 11. What is the intensity of the earthquake that is felt by few people at rest indoors and hanging objects swing slightly? A. moderately strong B. slightly felt C. strong D. weak 12. What is centered on the portion of the fault that has the greatest movement? A. Epicenter B. Focus C. Ground D. Surface 3 CO_Q2_Science 8_ Module 2
13. Which of the following statements is TRUE about the epicenter of an earthquake? A. The epicenter is where the seismographs are located. B. The epicenter is a place on the fault where it intersects the surface. C. The epicenter is the point on the fault’s surface within the Earth where the rupture on the fault began. D. The epicenter is the point on the Earth’s surface just above the location where movement on the fault began. 14. What factor determines the strength of an earthquake? The depth of its ________. A. epicenter B. fault C. focus D. ground 15. Which of the following statements differentiates focus and epicenter? A. The focus is the point where the rock first break while the epicenter is the point on the surface above the focus. B. The epicenter is the point where the rock first break while the focus is the point on the surface above the epicenter. C. The focus describes the direction of earthquake wave movement while epicenter tells where the earthquake originated. D. The epicenter describes the direction of earthquake wave movement while focus tells where the earthquake originated. 4 CO_Q2_Science 8_ Module 2
What’s New Activity 1. Label Me Directions: Label the figure by choosing the correct word from the box below. Write your answers on a separate sheet of paper. intensity fault focus epicenter 1. _____________________ 2. _____________________ 3. _________________________ Figure 2: Cross section of Fault Illustrated by: Angelo Zaldy C. Francia 6 CO_Q2_Science 8_ Module 2
What’s More Activity 2. Match It Directions: Match the definitions in Column A with the correct term in Column B. Write your answers on a separate sheet of paper. Column A Column B 1. It is the point on the ground directly above the focus. A. fault 2. It is a weak point in the tectonic plate where pressure B. focus within the crust is released. C. epicenter 3. It is a point where the earthquake begins. D. magnitude Activity 3: Point It Out Directions: Study the figure and answer the following questions below. Write your answers on a separate sheet of paper. Figure 4: Cross section of Fault with waves and points Illustrated by: Angelo Zaldy C. Francia Questions: 1. Which point is nearest to the focus? _________________ 2. Which point is farthest from the focus? _________________ 3. Which point is nearest to the epicenter? _________________ 4. Which point is farthest from the epicenter? _________________ 9 CO_Q2_Science 8_ Module 2
What I Have Learned Directions: Fill in the blanks with the correct term/s to complete the statements. Write your answers on a separate sheet of paper. 1. ______________ is the sudden movement of Earth’s crust at a fault line. 2. ______________ is the point where an earthquake begins. 3. An earthquake’s most intense shaking is often felt near the ______________. 4. When the stresses get too large, it results to cracks called ______________. 5. ______________ measures the energy being released from the origin of the earthquake. 6. ______________ is determined by the strength of the trembling made by the earthquake at a place. 7. ______________ scale measures the quantity of seismic energy released by an earthquake. 8. The intensity of an earthquake is determined by a ______________ scale. 9. ______________ fault is one that has moved in the past and is expected to move again. 10. _____________ fault is a structure that we can identify, but which does not have earthquakes. 13 CO_Q2_Science 8_ Module 2
Assessment Directions: Choose the letter of the best answer. Write your answers on a separate sheet of paper. 1. Where is the focus located in the illustration? A. 1 B. 2 C. 3 D. 2 and 3 Illustrated by: Angelo Zaldy C. Francia 2. At what point along a fault does the first motion of an earthquake occur? A. Epicenter B. Focus C. Intensity D. Magnitude 3. Where is the epicenter located? A. directly above the focus B. at the center of the earth C. located in the seismic waves D. located underground where the earthquake begins 4. Which instrument determines the amount of damage caused by earthquake? A. spring scale B. Richter scale C. Mercalli scale D. weighing scale 5. What is the highest intensity scale of an earthquake? A. VIII B. IX C. X D. XI 6. Scientists use different ways to find out if a fault is active. Which one is NOT included? A. creating a fault model B. observing the surroundings C. tracing the country’s historical record D. studying the past and present vibrations 15 CO_Q2_Science 8_ Module 2
7. Which point is nearest to the focus? A. 1 B. 2 C. 3 D. 4 Illustrated by: Angelo Zaldy C. Francia 8. Which of the following locations is directly above the focus? A. Core B. Epicenter C. Fault D. Hypocenter 9. What is the magnitude of an earthquake that can cause serious damage in areas across several hundred miles? A. 5.0 – 5.9 B. 6.0 – 6.9 C. 7.0 – 7.9 D. 8.0 – 8.9 10. Which of the following is NOT considered an effect when movement of an active fault happens? A. ground motion B. typhoon formation C. surface faulting D. land deformation 11. What is a seismograph? A. a shock wave released by an earthquake B. a scale used to describe energy released during an earthquake C. a device used to measure ground motion during an earthquake D. the image produced that shows ground vibrations during an earthquake 12. What would you expect to occur from an earthquake that measures 9.0 on the intensity scale? A. Hanging objects swing slightly. B. Stuff would fall off from the shelves. C. Most buildings are totally damaged. D. A slight shaking like a truck driving by. 13. Which instrument relies on human observation in measuring earthquake? A. spring scale B. Richter scale C. Mercalli scale D. weighing scale 16 CO_Q2_Science 8_ Module 2
14. Which does not describe the intensity of an earthquake? A. minor B. moderate C. strong D. weak 15. Which is measured by a seismograph? A. distance B. force C. intensity D. magnitude 17 CO_Q2_Science 8_ Module 2