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Geo-Tectonics - Geography General Knowledge Multiple Choice Questions with Answers

Questions
6 P Waves are also said to be __________ waves.
A push-pull
B side-side
C up-down
D none of the above

Answer: Option [A]

The correct answer is push-pull. P waves are also known as compressional waves, because they push and pull. Particles subjected to a P wave move in the same direction that the wave is moves in; it is the direction that the energy is traveling in, sometimes called the “direction of wave propagation.”

7 P Waves can pass through ______
A crust and core only
B liquids and gases only
C solids, gases, and liquids
D none of the above

Answer: Option [C]

P Waves can pass through solids, gases, and liquids. Waves or the primary waves are also known as longitudinal or compressional waves. It can pass through solid, liquid and gas. P- waves travel at the fastest speed through solid materials. Though these also pass through liquid and gaseous materials their speed is slowed down.

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8 Earthquakes occur most frequently at
A plate boundaries
B plate surface
C ocean beds
D all of the above

Answer: Option [A]

Earthquakes occur most frequently at plate boundaries. Most earthquakes occur at the boundaries where the plates meet. In fact, the locations of earthquakes and the kinds of ruptures they produce help scientists define the plate boundaries. There are three types of plate boundaries: spreading zones, transform faults, and subduction zones.

9 Amount of energy released by an earthquake is also known as
A wave
B scale
C unit
D magnitude

Answer: Option [D]

Amount of energy released by an earthquake is also known as magnitude. Magnitude is a measure of the amount of energy released during an earthquake. It is frequently described using the Richter scale. To calculate magnitude, the amplitude of waves on a seismogram is measured, correcting for the distance between the recording instrument and the earthquake epicentre.

10 How many seismograph stations are needed to locate the epicenter of an earthquake ?
A 2
B 3
C 4
D 5

Answer: Option [B]

The correct answer is 3. Seismic stations detect earthquakes by the tracings made on seismographs. Tracings made at three separate seismic stations are needed to locate an earthquake epicenter.

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