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By Savita S. More

Class 8 Science Some Natural Phenomena Worksheet -1

    (d)  On a hilltop

 

  1. What should you avoid touching during a thunderstorm?

    (a)  Wooden objects

    (b)  Plastic objects

    (c)  Metal objects and water

    (d)  Glass objects

 

  1. What is the recommended position to adopt if caught in an open field during a lightning storm?

    (a)  Lying flat on the ground

    (b)  Standing tall

    (c)  Squatting low with head between knees

    (d)  Running for shelter

 

  1. Which material is better for construction in highly seismic areas?

    (a)  Heavy concrete

    (b)  Steel

    (c)  Mud or timber

    (d)  Glass

 

  1. What should you do if you are indoors when an earthquake strikes?

    (a)  Run outside immediately

    (b)  Take shelter under a sturdy table

    (c)  Stand near a window

    (d)  Climb a tall object

 

Section C: True or False

 

  1. An electroscope detects whether a body is charged. 
  2. Tsunamis are caused by hurricanes. 
  3. The outer core of the earth is solid. 
  4. Richter scale measures wind speed. 
  5. The process of charging by rubbing generates static electricity. 

 

Section D: Short Answer Questions

 

  1. What is the Richter scale used for? 
  2. Name three seismic zones in India. 
  3. Explain why an electroscope is used. 
  4. What happens during electric discharge in clouds? 
  5. Mention two causes of earthquakes.

 

Section E: Long Answer Questions

 

  1. What are the effects of earthquakes on human life and property? 
  2. How is a seismograph used to measure earthquakes? 
  3. Discuss the causes and effects of tsunamis. 
  4. Write a detailed note on the transfer of charge by rubbing. 
  5. What precautions should be taken while constructing buildings in seismic zones?

 

 

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