What Causes an Earthquake

  1. Q1: What is the main cause of an earthquake inside the Earth?
    Answer: Movement
    Explanation: Earthquakes are caused by the sudden movement of tectonic plates inside the Earth.
  2. Q2: What do we call the outermost layer of the Earth where earthquakes occur?
    Answer: Crust
    Explanation: The Earth’s crust is broken into plates, whose movement causes earthquakes.
  3. Q3: What is the name of the cracks in the Earth’s crust where earthquakes happen?
    Answer: Faults
    Explanation: Faults are cracks in the crust where stress builds up and releases as an earthquake.
  4. Q4: What is released when tectonic plates slide past each other?
    Answer: Energy
    Explanation: The sliding of tectonic plates releases stored energy, causing an earthquake.
  5. Q5: What type of waves travel through the Earth during an earthquake?
    Answer: Seismic
    Explanation: Seismic waves carry the energy released during an earthquake.
  6. Q6: What is the sudden breaking of rocks under stress called?
    Answer: Fracture
    Explanation: Fracture of rocks releases energy and causes earthquakes.
  7. Q7: What is the point within the Earth where energy is first released during an earthquake?
    Answer: Focus
    Explanation: The focus is the underground point of origin of an earthquake.
  8. Q8: What is formed when rocks are subjected to force and bend?
    Answer: Stress
    Explanation: Stress builds up in rocks due to plate movements, leading to earthquakes when released.
  9. Q9: What is the movement of Earth’s crustal plates called?
    Answer: Tectonic
    Explanation: Tectonic movements of plates are responsible for most earthquakes.
  10. Q10: What kind of pressure is built up at fault lines before an earthquake?
    Answer: Stress
    Explanation: Stress builds up due to plate movement and is suddenly released, causing an earthquake.

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