Earthquake

Q1: What is the sudden shaking of the Earth’s surface called?
Answer: Earthquake
Explanation: An earthquake is the sudden shaking of the ground caused by movement within the Earth’s crust.
Q2: What is the point inside the Earth where an earthquake originates?
Answer: Focus
Explanation: The focus is the underground point where the earthquake starts.
Q3: What is the point on the Earth’s surface directly above the focus called?
Answer: Epicentre
Explanation: The epicentre is the point on the surface directly above the earthquake’s origin.
Q4: What instrument is used to measure an earthquake?
Answer: Seismograph
Explanation: A seismograph is a device used to record and measure the strength of earthquakes.
Q5: What scale is used to measure the magnitude of an earthquake?
Answer: Richter
Explanation: The Richter scale measures the magnitude of an earthquake.
Q6: What is the maximum value of magnitude on the Richter scale?
Answer: Ten
Explanation: The Richter scale has no upper limit, but values above ten have never been recorded.
Q7: What natural boundaries cause most earthquakes?
Answer: Faults
Explanation: Fault lines or fractures in the Earth’s crust are responsible for most earthquakes.
Q8: Which layer of Earth’s surface shakes during an earthquake?
Answer: Crust
Explanation: Earthquakes are caused by sudden movements in the Earth’s crust.
Q9: What type of waves are produced during an earthquake?
Answer: Seismic
Explanation: Seismic waves are produced and spread out from the earthquake’s focus.
Q10: In which zone is India located, making it prone to earthquakes?
Answer: Seismic
Explanation: India lies in a seismically active zone, making it prone to earthquakes.

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