Over the years however, it was realized that the magnitude that Richter had defined for California (ML means local magnitude), did not apply to Eastern North America where the seismic waves attenuate differently. Tendency of material to lose its internal cohesion. Question2: How is the earthquake measured? Only a very tiny minority of these precede a larger earthquake. 5.5. It occurs along the plate boundaries. Question 20. The information below gives responses to questions that are likely to be frequently asked during an emergency. Will More Shocks Be Felt After A Strong Earthquake? 10. See the Modified Mercalli Intensity Scale. The movement of the plates creates strain which is then accumulated in faulted areas causing earthquakes. The volcanic eruptions also cause earthquakes. Answer: Earthquake is a sudden vibration of the part of the earth caused by plate movements. What are nitrogenous bases of the purine type? Natural disasters. Which Are The Two Kinds Of Earthquakes? Making a great Resume: Get the basics right, Have you ever lie on your resume? In terms of energy, an earthquake of magnitude 6 releases about 30 times more energy than an earthquake of magnitude 5 and about 1000 times more energy than an earthquake of magnitude 4. What is it like to experience an earthquake? Published. Question 9. Shake, rattle, and roll! About this quiz: All the questions on this quiz are based on information that can be found at Earth Science: Earthquakes . Windows may rattle and people may feel tremor at scale of 3 Since the tectonic plates have finite dimensions, the magnitude must therefore also reach a maximum. Although a large earthquake may be preceded by a foreshock (the Saguenay earthquake of November 1988 is an example), the occurrence of a small earthquake is not in itself a typical sign. STUDY. The hypocenter (the place where displacement occurs along a rock fracture) of an earthquake is generally located several km below the surface (on average, between 5-30 km in Eastern Canada), where the surface temperature would have no influence. Since the distance between the Earth and Sun changes throughout the year due to the elliptical trajectory of the Earth around the Sun, it seems possible that the attractive gravitational forces between the two bodies might cause extra strain in the Earth's crust. The Intensity scale is designed to describe the effects of an earthquake, at a given place, on natural features, on industrial installations and on human beings. They are the Earth’s natural means of releasing stress. 10 times less (2 millimeters) corresponds to a magnitude of 1; 100 times less (0.2 millimeters) corresponds to magnitude 0; 1000 times less (0.02 millimeters) corresponds to magnitude -1. An earthquake is the movement of the Earth’s crust caused by pieces of the crust suddenly shifting at faults, or cracks in the Earth. All questions and answers from the NCERT Book of Class 8 Science Chapter 14 are provided here for you for free. Q. The epicenter is where an earthquake begins. Question 3. As magnitude calculations are based on a logarithmic scale, a ten-fold drop in amplitude decreases the magnitude by 1. a) 2005 Kashmir earthquake b) 1991 Uttarkashi earthquake c) 1993 Killari earthquake d) 1950 Assam earthquake Answer: c Clarification: Base isolation technique was first demonstrated in India after the 1993 Killari earthquake 2. What is the time difference in mean solar time between 30° N 75° W and 30° N 90° W? A device that measures the number of eathquakes. More than a million earthquakes rattle the world each year. The intensity differs from the magnitude which is related to the energy released by an earthquake. Free download in PDF Earthquake Objective Type Questions and Answers for competitive exams. Though the 2004 earthquake in Sumatra was more powerful, Sumatra is an island in the Asian country of Indonesia. Do Several Magnitude Scales Exist? Question 1. Mercalli scale (devised in 1902) is used to assess the effects of a quake at a particular place, rather than to measure the overall power. Answer Key Earthquake Webquest Worksheet Use the websites below to answer the following questions about earthquakes. Answer: (а) On the border between Canada and USA These short objective type questions with answers are very important for competitive exams as well as Board exams. Answer: an existing weakness in the earth's crust. Sometimes, tremendous energy can build up within a single, or between neighbouring plates. Which Is The Worst Earthquake Disaster Ever Recorded So Far? Question 1 . Nepal earthquake: Key questions and answers. Question 8. Next Question > The Sumatran Earthquake. Question 33. What is the evidence that the Earth revolves around the Sun? Located on a major faultline dividing the Indian and Eurasian plates, quake-prone Nepal is … These short solved questions or quizzes are provided by Gkseries. Earthquake & Seismic Engineering Quiz – Interview Questions CivilDigital brings you series of frequently asked and discussed multiple choice and interview questions for the benefit of every civil engineering student or job seeker for Interview & Exam Preparation. The main thing that distinguishes an earthquake from an aftershock is the magnitude... What is the difference between Focus and Epicenter? Report an issue . Yes! The driving force for this movement is found in the Earth's mantle in the form of convective currents. 3. Can Earthquakes Be Predicted? You can find additional explanations on plate tectonics: In Eastern and Northern Canada, earthquakes are not related to volcanic processes. What Was The Greatest Earthquake In World History? Test. The seismism of a... Read More. Read the answers to more fascinating earthquake questions! This means that, at the same distance, an earthquake of magnitude 6 produces vibrations with amplitudes 10 times greater than those from a magnitude 5 earthquake and 100 times greater than those from a magnitude 4 earthquake. Here are some commonly asked questions about seismology and earthquakes: What is an earthquake? Question 21. The rocks become soft when they are exposed to the great heat of the interior of the earth, and his the change makes them move. The 2016 Kumamoto Earthquake is actually a series of quakes that are being caused by two plates slipping against each other along an active inland fault. Answer-17. Furthermore, the principle causes of earthquakes (movement of tectonic plates, volcanoes, etc.) Since the temperature and gravitational forces are the only forces changing with the seasons, seasonal effects can be eliminated as a factor in influencing the frequency of earthquakes. The formulation used is called Magnitude Nuttli or mN. You may One of the causes is due to the movement of the molten rock down in the earth’s crust. A megathrust earthquake is a very large earthquake that occurs in a subduction zone, a region where one of the earth's tectonic plates is thrust under another. The scale that measures an earthquake based on its magnitude is called the. Fujita Scale. Questions. These microseisms are not earthquakes as they are caused by cracking ice and movements of ice blocks one against another. Recent volcanic activity in Canada has been experienced in BC and the Yukon. Where there is an extensive history of earthquake activity, these parameters can often be estimated. Question 27. What Causes Earthquakes? 2. Answer : Shallow, Intermediate and deep. Where Can I Find Information On The World's Earthquakes? How the lines of latitude and longitude are drawn on a globe of Earth?
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