NCERT Class VIII Science Solutions: Chapter 15-Some Natural Phenomena Part 2

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Question 7:

Consider the list of terms given below:

  1. Seismic Zone

  2. Fault Zone

  3. Mantle

  4. Inner Core

The boundaries of the earth’s plate are known as

  1. (i) & (ii)

  2. (i) & (iii)

  3. (iii) & (iv)

  4. (ii), (iii) & (iv)

Answer: A

Question 8:

The outermost layer of earth is called

  1. Mantle

  2. Outer core

  3. Crust

  4. Inner core

Answer: C

Image of the earth's layer

Image of the Earth's Layer

Image of the earth's layer

Question 9:

Major earthquakes are less likely to occur in

  1. North East India

  2. Rajasthan

  3. Rann of Kutch

  4. Orissa

Answer: D

Question 10:

Consider the list of terms given below

  1. Tsunami

  2. Landslide

  3. Floods

  4. Lightning

Earthquakes can cause

  1. (i), (ii) & (iii)

  2. (ii) & (iv)

  3. (ii), (iii) & (iv)

  4. (iii) & (iv)

Answer: A

VERY SHORT ANSWER QUESTIONS

Question 11:

State whether the following are true or false.

  1. Earthquakes occur all the time all over the world.

  2. The plates of the outermost layer of the earth are always in continuous motion.

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

  4. The process of electric discharge cannot occur between clouds and the earth.

  5. Bathing outdoors should be avoided during thunderstorm.

Answer:

  1. Earthquakes occur all the time all over the world. (True)

  2. The plates of the outermost layer of the earth are always in continuous motion. (True)

  3. Tremors on the earth can also be caused by the eruption of a volcano. (True)

  4. The process of electric discharge cannot occur between clouds and the earth. (False)

  5. Bathing outdoors should be avoided during thunderstorm. (True)

Question 12:

Is it possible to predict the occurrence of an earthquake?

Answer:

No