Pressure, Winds, Storms, and Cyclones
Class 8 · Science · 11 Questions
State whether the following statements are True [T] or False [F].
An elephant stands on four feet. If the area covered by one foot is 0.25 m², calculate the pressure exerted by the elephant on the ground if its weight is 20000 N.
Would lightning occur if air and clouds were good conductors of electricity? Give reasons for your answer.
Explain how a storm becomes a cyclone.
Describe an activity to show that air flows from a region of high pressure to a region of low pressure.
What is a thunderstorm? Explain the process of its formation.
Explain the process that causes lightning.
Explain why holes are made in banners and hoardings.
Hold a strip of paper, 18 cm long and 2 cm wide, between your thumb and forefinger so that it hangs freely. Predict what you will observe if you blow over the paper. Perform the activity now. Note down your observations and interpret your results.
List three major cyclones which have occured in India in the last 20 years. List two major destruction caused by each of the cyclones. What measures were taken by the local government and communities to reduce the loss of life and destruction of property? Mention two suggestions you would like to propose to the local government.
Collect data on the strength of thunderstorms for various regions of India. Compare your findings and identify which regions are more prone to thunderstorms. Can you give reasons for your findings?