Tag: causes of earthquakes

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Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

Seismograph is a instrument used to:

  1. Record lightning

  2. Record strength of wind

  3. Record temperature

  4. Record vibrations of earthquakes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The tremors produces waves on the surface of the earth. These are called seismic waves. The waves are recorded by an instrument called seismograph.

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

An earthquake of magnitude $7$ or more in Richter scale is a _____ one?

  1. Stronger

  2. Weaker

  3. Medium

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Richter scale is logarithmic. An earthquake of magnitude 7 or higher is considered a major or strong earthquake capable of causing significant damage.

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

Magnitude of earthquake is measured by

  1. electroscope

  2. Richter scale

  3. seismograph

  4. coulomb
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Magnitude of earthquake is measured by Richter scale. A electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body.  A seismograph is used to record of seismic waves caused by an earthquake, explosion, or other Earth-shaking phenomenon. Coulomb is the unit of electrical charge. 

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

The movement of Earth's plates causes

  1. Lightening

  2. Cyclons

  3. Earthquake

  4. Thunderstorms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The movement of Earth's plates causes Earthquake. Earth's crust is broken up into large pieces called tectonic plates. Tectonic plates are giant pieces of the Earth's crust that fit together and move around on the Earth's surface. Tectonic plates are constantly moving slowly, but sometimes friction between them causes them to lock together and become unable to move. The rest of the plates carry on moving, which leads to increased pressure on the locked section. Eventually, the locked section succumbs to the pressure, and the plates move past each other rapidly. This movement causes a tectonic earthquake. The waves of released energy move through the Earth's crust and cause the shaking we feel at an earthquake site. 

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

Which of the following is not a after-effect of earthquake?

  1. Destruction of livelihood

  2. Death and injuries

  3. Water waves and tsunamis

  4. Rainfall
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An earthquake is a sudden shaking movement of the surface of the earth. The primary effects of earthquakes are ground shaking, ground rupture, landslides, tsunamis, liquefaction, destruction of livelihood. death and injuries. Rainfall is not an after-effect of earthquake.

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

Earthquake can cause

  1. Tsunami

  2. Floods

  3. Landslide

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The primary effects of earthquakes are ground shaking, ground rupture, landslides, tsunamis, flood and liquefaction. Fires are probably the single most important secondary effect of earthquakes.

Multiple choice physics structure of earth seismic waves and tsunami causes of earthquakes origin of earth and its internal energy transfer of charge lightning safety

State whether the given statement is True or False :

Tremors on the Earth can also be caused by the eruption of a volcano. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Tremors on the Earth can be caused when a volcano erupts, or a meteor hits the Earth, or an underground nuclear explosion is carried out. However, most earthquakes are caused by the movement of Earth’s plates.