The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.

3

(a)

During the construction of a building, the lightning conductor was left hanging in the air by mistake. Would the lightning conductor be still effective? Explain.

3

(a)

Explain how does lightning conductor protect a building from getting struck by lightning.

3

(a)

Identify the lightning conductor and the copper plate in figure.

3

(a)

You might have observed on a dry day that when you touch the screen of a television or computer monitor (with picture tube), you get a slight shock. Why does it happen?

3

(a)

If air and cloud are good conductors of electricity, do you think lightning could occur? Explain.

3

(a)

Mention three precautions that you will take to protect yourself if earthquake strikes when you are inside the house.

3

(a)

Explain the electric discharge occur in clouds.

3

(a)

Is it possible to predict the occurrence of an earthquake?

3

(a)

If the materials used for constructing a building were good conductors, do you think lightning will strike the building? Will the lightning conductor be still required to be installed in the building?

3

(a)

Explain how do the buildings can be designed and constructed in seismic zones.

3

(a)

Write Do's and Don'ts during a thunderstorm.

3

(a)

What are lightning conductors? How is it used?

3

(a)

What are seismic waves? How can it be measured?

3

(a)

During the natural disaster (Tsunami) in Japan, the nuclear reactors were damaged, due to which hazardous radiation affected the large areas.
(i) What was the reason for this damage?
(ii) How did it affect the people and environment?
(iii) Do you think that nuclear energy is good for nature?

3

(a)