Question

What is a "shadow zone" in the context of earthquake waves?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: A zone where earthquake waves are not detected due to Earth's core

Detailed Solution:

The correct answer is “A zone where earthquake waves are not detected due to Earth's core”.

A seismic shadow zone is an area of the Earth's surface where seismographs cannot detect direct P waves and/or S waves from an earthquake. This is due to liquid layers or structures within the Earth's surface.

Similar Questions:

What is the upper portion of the mantle called?
  1. Asthenosphere
  2. Lithosphere
  3. Moho
  4. None
Where is the epicentre located in relation to the focus of an earthquake?
  1. At the same depth
  2. Directly above it
  3. Adjacent to it
  4. Below it
Which layer of the Earth is responsible for convection currents that drive plate tectonics?
  1. Lithosphere
  2. Asthenosphere
  3. Outer core
  4. Lower mantle
The point within the earth where an earthquake originates is called ?
  1. Epicentre
  2. Hypocentre
  3. Fault zone
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Which layer of the Earth is predominantly responsible for generating the Earth's magnetic field?
  1. Crust
  2. Outer core
  3. Mantle
  4. Inner core
What properties of matter increase with depth towards the Earth's interior?
  1. Density only
  2. Temperature and pressure only
  3. Temperature, pressure, and density
  4. Magnetic field strength
Which processes are referred to as 'endogenic'?
  1. Processes originating outside the Earth
  2. Processes originating inside the Earth
  3. Processes involving water bodies
  4. Processes involving atmospheric changes
Which waves on a seismograph are typically the last to arrive and are more destructive?
  1. P-waves
  2. S-waves
  3. T-waves
  4. Surface waves
What causes an earthquake to occur?
  1. Atmospheric pressure changes
  2. Magnetic field fluctuations
  3. Volcanic eruptions
  4. Movement of tectonic plates
What causes gravity anomalies on the Earth's surface?
  1. Uneven distribution of mass within the Earth
  2. Magnetic field variations
  3. Seismic waves
  4. Ocean currents
Which point experiences the earthquake waves first on the Earth's surface?
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  2. Epicentre
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What does Moho's discontinuity separate?
  1. Lithosphere and asthenosphere
  2. Crust and mantle
  3. Upper mantle and lower mantle
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