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CTET Natural phenomena — practice questions

Explore 58 free Natural phenomena questions in CTET Science. Open each question or exercise to read its content, reference answers and available explanation.

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Natural phenomena questions and exercises with answers

Showing questions 1–30 of 58.

Lightning is best described as which kind of natural event?Read the answer and worked solution →The air around a lightning flash is heated to about what temperature?Read the answer and worked solution →What causes the sound of thunder?Read the answer and worked solution →The scientific study of lightning is called what?Read the answer and worked solution →Lightning that occurs within a single thundercloud is called what?Read the answer and worked solution →Which type of lightning poses the greatest threat to life and property?Read the answer and worked solution →Which type of lightning is the most common?Read the answer and worked solution →What is dry lightning most likely to cause?Read the answer and worked solution →Heat lightning is lightning that can be seen from far away but what else?Read the answer and worked solution →Lightning starts a cloud-to-ground flash with a stepped leader moving where?Read the answer and worked solution →In most cloud-to-ground lightning, what flows down to the ground?Read the answer and worked solution →Positive lightning makes up what share of all lightning strikes?Read the answer and worked solution →An average negative lightning bolt carries a current of about how much?Read the answer and worked solution →Why are positive lightning strikes called bolts from the blue?Read the answer and worked solution →Which stage is NOT one of the main steps in forming lightning?Read the answer and worked solution →In a thunderstorm, the upper part of the cloud usually becomes what?Read the answer and worked solution →Collisions between ice crystals and graupel in a storm cause what?Read the answer and worked solution →What is graupel?Read the answer and worked solution →What is the anvil of a thunderstorm cloud?Read the answer and worked solution →Lightning is damaging to a tree mainly because the current does what?Read the answer and worked solution →Lightning passing through sandy soil can form tubes called what?Read the answer and worked solution →A lightning rod protects a building by doing what?Read the answer and worked solution →Why are passengers in an aircraft generally safe from lightning?Read the answer and worked solution →About what percent of people struck by lightning survive?Read the answer and worked solution →Which travels faster in air, the light of lightning or the sound of thunder?Read the answer and worked solution →Thunder is heard 3 seconds after a flash. About how far is the strike?Read the answer and worked solution →Thunder reaches you exactly 1 second after a flash. Distance to the strike?Read the answer and worked solution →The place where an earthquake begins to rupture underground is called what?Read the answer and worked solution →The point on the ground directly above an earthquake's focus is the what?Read the answer and worked solution →An earthquake is the shaking of Earth's surface due to what?Read the answer and worked solution →

Worked practice questions

Lightning is best described as which kind of natural event?

  1. A strong wind spiralling over land
  2. A sudden shift of rock layers
  3. A rise of sea water on the coast
  4. A static electric discharge in air
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Correct answer: D. A static electric discharge in air

1. Lightning is a discharge of static electricity between two charged regions, at least one of them in the atmosphere. 2. Shifting rock layers describe earthquakes, and sea water rising describes tsunamis. 3. Spiralling wind describes cyclones, not lightning. _Source: Wikipedia, Lightning (lead section)_

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The air around a lightning flash is heated to about what temperature?

  1. 3,00,000 °C
  2. 300 °C
  3. 3,000 °C
  4. 30,000 °C
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Correct answer: D. 30,000 °C

1. The discharge is near instantaneous and releases huge energy. 2. The surrounding air rapidly heats to about 30,000 °C. 3. Values like 300 or 3,000 °C are far too low, and 3,00,000 °C is far too high. _Source: Wikipedia, Lightning (lead section)_

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What causes the sound of thunder?

  1. Clouds colliding with each other
  2. Wind rushing through tall trees
  3. Rain hitting the ground hard
  4. A shock wave from rapidly heated air
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Correct answer: D. A shock wave from rapidly heated air

1. Lightning heats the air along its path to extreme temperatures. 2. The heated gases suddenly increase in pressure and expand, forming a shock wave heard as thunder. 3. Clouds do not collide to make sound, and rain or wind are not the source. _Source: Wikipedia, Lightning (lead section)_

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