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- What are earthquakes and what causes them? Earthquakes are rupturing processes in the Earth's crust that lead to vibrations on the surface layer of the planet.
- How many earthquakes occur annually worldwide? Very strong earthquakes with magnitudes of 8 and higher occur once a year on a global average. On average, 15 quakes ranging in magnitude between 7 and 8 strike on an annual basis.
- What equipment is used to record and measure earthquakes? Earthquakes are usually measured by seismometers. Seismometers are installed on the Earth's surface around the globe in particularly "quiet places", generally in seismological observatories.
- Where do earthquakes occur most frequently? The uppermost layers of the earth are made up of many rigid plates (tectonic plates) that either slide towards or away from each other or over and under each other.
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A tremor below the surface of the earth which causes shaking of the crust: 1. Earthquake waves 2. Earthquake 3. Seismic waves 4. None of the above Answer Earthquake
A series of shocks that result from sudden earth movement: 1. Earthquake 2. Volcanoes 3. Earthquake waves 4. Plate tectonics Answer Earthquake waves
Which amongst the following is NOT a factor that causes an earthquake? 1. Folding and faulting 2. Volcanoes 3. Lava 4. Plate tectonics Answer Lava
Which waves are recorded on a seismograph after the P waves? 1. Primary waves 2. Push waves 3. Shear waves 4. Surface waves Answer Shear waves
Which of the following measures the power of an earthquake on a scale of 1 to 9? 1. Seismograph 2. Richter scale 3. Mercalli scale 4. Thermometer Answer Richter scale
The point on the earth's surface directly above the seismic focus is called: 1. Epicentre 2. Seismic focus 3. Seismograph 4. Mercalli Answer Epicentre
The instrument that grades the earthquakes on the basis of observed effects on a 12-point scale. 1. Thermometer 2. Seismograph 3. Richter scale 4. Mercalli scale Answer Mercalli scale
Which, amongst the following, is NOT a destructive effect of earthquakes? 1. Submergence 2. Landslides 3. Energy release 4. Tsunami Answer Energy release
A large destructive ocean wave that can be generated by any disturbance (earthquakes, volcanoes etc.) that rapidly displaces a large mass of water: 1. Submergence 2. Tsunami 3. Landform 4. Volcano Answer Tsunami
Which of the following is not correct? 1. Circum-Pacific Mountain Belt : 70% of world earthquakes 2. Mid Atlantic Ridge: 10% of world earthquakes 3. Mid World Mountain Belt: 20% of world earthquakes 4. Pacific Ring of Fire: 15% of world earthquakes Answer Pacific Ring of Fire: 15% of world earthquakes
Earthquakes – Practice Questions and Answers revised November 2008 1. Earthquakes are produced during: (a) plastic failure within the mantle, (b) brittle failure during faulting, (c) mushrooming during folding (d) none of the above 2. Seismic waves are waves of energy that: (a) plastically distort the material that they pass through,
Aug 23, 2023 · August 23, 2023 / Questions & Answers. Earthquake safety is crucial for individuals and communities living in earthquake-prone regions. Earthquakes are natural disasters caused by the sudden release of energy in the Earth’s crust, resulting in seismic waves that can cause significant damage to buildings, infrastructure, and the environment.
Multiple Choice Questions for Earthquakes - Chapter 16 Each chapter will include a few questions designed to test your knowledge of material covered in the chapter and in the Internet-based resources.
100 Frequently Asked Questions About Earthquakes and Their Answers – Polaris International Disaster Response Team. by Polaris. Q: What causes earthquakes? A: It takes a very specific geological event to create an earthquake.
Earthquake Engineering Questions and Answers – Seismic Hazard Map. This set of Earthquake Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Seismic Hazard Map”. 1. The economic losses that can be recouped during an earthquake are called as ____________. a) Primary losses. b) Secondary losses.
