Suggest two methods to find out wind direction at a given place.

3

(a)

State two experiences that made you think that air exerts pressure.

3

(a)

Explain why holes are made in hanging banners and hoardings.

3

(a)

How will you help your neighbours in case cyclone approaches your village/town?

3

(a)

Mention an example when the cyclone hit a part of India and how much destruction was caused due to it.

3

(a)

When strong/high speed wind blows, an umbrella held upright at times gets upturned. Explain the reason.

3

(a)

The advanced technologies issue the alerts and warnings of unexpected storm. Comment.

3

(a)

Monsoon brings rain. Explain the formation of monsoon.

3

(a)

Rohan was very happy that'there was his birthday. He was decorating the room by blowing balloons. He was wondered that most of his balloons burstd. He rushed to his father and asked the reason. His father smiled and explained.
What are the values shown by Rohan?

3

(a)

How are the pressure difference created in nature?

3

(a)

A flat in Mumbai with a balcony facing the sea has some clothes hung on a clothes line in the balcony. Towards which direction, the clothes will be blown in the afternoon? Explain it.

3

(a)

Briefly explain what are cyclones and how are they formed.

3

(a)

What is thunderstorm? How does it develop?

3

(a)

Explain that how uneven heating between equator and the poles generates wind current.

3

(a)

What is an anemometer? Explain with the help of a diagram.

3

(a)