CBSE Class 8 Science Chapter 12 Some Natural Phenomena Question And Answers

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CBSE Class 8 Science Chapter 12 Some Natural Phenomena Fill In The Blanks

Question 1. When charges move, they constitute an electric current.
Answer: Electric

Question 2. __________types of charges are gained by rubbing objects.
Answer: Two

Read And Learn More CBSE Class 8 Science Question And Answers

Question 3. The process of transfer of charge from a charged object to the Earth is called
Answer: Earthing

Question 4. A lightning strike could destroy__________ and
Answer: Life, Property

Question 5. Lightning conductor can_____________ buildings from the effect of lightning.
Answer: Protect

Question 6. An earthquake is caused by a _______ deep inside the Earth’s crust.
Answer: Disturbance

” Cbse Class 8 Science Chapter 12 Question And Answers “

Question 5. Static charges can be induced by ________.
Answer: Rubbing

Question 6. ________ is a device used to protect buildings from the effects of lightning.
Answer: Lightning conductor

Question 7. An earthquake is caused due to the movement of plates in the Earth’s crust.
Answer: Tectonic

CBSE Class 8 Science Chapter 12 Some Natural Phenomena Question And Answers

” Some Natural Phenomena Class 8 “

CBSE Class 8 Science Chapter 12 Some Natural Phenomena True Or False

Question 1. The process of electric discharge cannot occur between clouds and the Earth.
Answer: False

Question 2. Bathing outdoors should be avoided during a thunderstorm.
Answer: True

Question 3. Earthquakes can occur anytime, all over the world.
Answer: True

Question 4. The plates of the outermost layer of the Earth are always in continuous motion.
Answer: True

Question 5. Tremors on the Earth can be caused by the eruption of a volcano
Answer: True

” Earthquake Causes And Effects “

CBSE Class 8 Science Chapter 12 Some Natural Phenomena Match The Columns

CBSE Class 8 Science Chapter 12-Match the Column I with Column II

Answer: A-7,B-4,C-1,D-2,E-3,F-4,G-5

CBSE Class 8 Science Chapter 12 Some Natural Phenomena Assertion-Reason Questions

The following questions consist of two statements -Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false
  4. A is false, but R is true.

CBSE Class 8 Science Chapter 12 Some Natural Phenomena Question And Answers

” Lightning And Thunder Explanation “

Question 1.

Assertion (A): Maximum damage occurs at the epicentre.
Reason (R): The Destructive energy of an earthquake is measured on the Richter scale.

Answer: 2. Both A and R are true, but R is not the correct explanation of A.

Question 2.

Assertion (A): We should not use an umbrella while crossing an open field during a thunderstorm.
Reason (R): As the rod of the umbrella and its supporting wires are made up of metals, it may affect the person who holds the umbrella

Answer: 1. Both A and R are true, and R is the correct explanation of A.

The following questions consist of two statements: Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below.

  1. Both A and R are true, and R is the correct explanation of A.
  2. Both A and R are true, but R is not the correct explanation of A.
  3. A is true, but R is false.
  4. A is false, but R is true.

Question 1.

Assertion (A) The most destructive earthquakes have a magnitude of more than 7 on the Richter scale.
Reason (R) We should move inside our houses or tall buildings during earthquakes.

Answer: We should not move inside our house or tall buildings during an earthquake because tall buildings may collapse and cause an accident.

” Static Electricity Experiments Class 8 “

Question 2.

Assertion (A) A charged body repels an uncharged body.
Reason (R) Like charges repel each other while unlike charges attract each other.

Answer: A charged body always attracts an uncharged body

Question 3.

Assertion (A): An earthquake is a sudden shaking or trembling of the earth which lasts for a short time.
Reason (R): The plates inside the Earth’s crust collide with one another, which causes earthquakes.

Answer: Earthquakes are caused by sudden shaking and the collision of plates inside Earth’s crust.

” Richter Scale And Earthquake Measurement “

Question 4.

Assertion (A): An electroscope is a device that is used to test whether an object is carrying a charge or not.
Reason (R): The Electroscope is based on the transfer of charges.

Answer: An Electroscope determines whether any object is charged or not by the transfer of charges.

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