CBSE 7th Standard Science Winds, Storms and Cyclones Important Questions And Answers Study Material - QB365 Set C | QB365

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CBSE 7th Standard Science Winds, Storms and Cyclones Important Questions And Answers Study Material - QB365 Set C

Published on: 31/10/2025

Question Set C

CBSE 7th Standard Science Winds, Storms and Cyclones Important Questions And Answers Study Material - QB365

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Std: 7th Standard CBSE - Science

chapter: Winds, Storms and Cyclones - Important Questions And Answers

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Questions:

Generic 3

2 x 3 = 6

Give three precautions that should be taken to protect oneself from the thunderstorm.

Explain why holes are made in hanging banners and hoardings.

Fill up / 1 Marks

5 x 1 = 5

High speed wind can cause cyclone in regions of _______ pressure.

A change in the direction of wind is caused dueto __________ of earth.

Air __________ on heating and ___________ on cooling.

Air moves from a region of ___________ pressure to a region of __________ pressure.

Wind is ___________ air.

Multiple Choice Question

5 x 1 = 5

Orissa was hit by a cyclone in the year:

(a)

1989

(b)

1999

(c)

2001

(d)

2003

Increased wind speed is accompanied with

(a)

increased air pressure

(b)

affected air pressure

(c)

reduced air pressure

(d)

lower humidity

10.

Wind is caused due to

(a)

uneven heating of equator and poles

(b)

difference in humidity

(c)

even heating of land and water

(d)

None of the above

11.

Orissa was hit by a cyclone with wind speed of 200 km/h on which date

(a)

18Oct, 1998

(b)

18 Oct, 1999

(c)

18 Oct, 2001

(d)

18 Oct, 2000

12.

Which one of the following places is unlikely to be affected by a cyclone?

(a)

Chennai

(b)

Mangaluru (Mangalore)

(c)

Amritsar

(d)

Puri

Generic 2

4 x 2 = 8

13.

Can you say why smoke always rises up?

14.

Name the factor responsible for the increase of speed of wind or cyclones.

15.

Enlist the other names of cyclone.

16.

Why is Chandigarh unlikely to be affected by a cyclone?

Generic 5

2 x 5 = 10

17.

Explain that temperature is also involved in the increasing or decreasing speed of wind.

18.

The picture in figure shows tree line along the sea coast on an island near the equator. As shown, the tree tops are permanently bent in one direction. Are the trees bend towards the sea or away from it? Explain.

True or False

5 x 1 = 5

19.

The coast line of India is not vulnerable to cyclones.

(a)

True

(b)

False

20.

Uneven heating of land and water in winter (North-West and colder land) brings little rain in winter.

(a)

False

(b)

True

21.

Falling water droplets and rising air move vigorously to produce thunderstorm.

(a)

False

(b)

True

22.

Hud-Hud and Katrina are Typhoon.

(a)

False

(b)

True

23.

The layer of air surrounding the earth is called atmosphere.

(a)

False

(b)

True

Match the following

5 x 1 = 5

24.

Wind

25.

Monsoon

26.

Typhoon

27.

Anemometer

28.

On cooling air

1 Marks

10 x 1 = 10

29.

Why is it advisable not to shut all the doors and windows during a storm?

30.

Why do chimneys made of steel do not require protection from lighting?

31.

What damage can lightning do?

32.

What is known as the eye of storm?

33.

When does it rain?

34.

I want to know that these winds do for us.

35.

Does this activity indicate that warm air rises up?

36.

How could this happen?

37.

Do you find it difficult of ride a bicycle against the direction of the wind?

38.

What happens to the shape of the can?

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Answers Key:

Generic 3

2 x 3 = 6

The following three precautions must be taken to protect oneself from the lightning of thunderstorm
(i) Do not take shelter under an isolated tree.
(ii) Do not lie on the ground
(iii) Do not take shelter under an umbrella with a metallic end.

Holes are made in hanging banners and hoardings to allow air to pass through them as a result of which there will be less pressure of air on the banners or hoardings. Unless it is done, these may be uprooted or distorted due to the pressure of the air.

Fill up / 1 Marks

5 x 1 = 5

()
low

()
rotation

()
expands, contracts

()
high, low

()
moving

Multiple Choice Question

5 x 1 = 5

(a)
1989

10.

(a)
uneven heating of equator and poles

11.

(b)
18 Oct, 1999

12.

Generic 2

4 x 2 = 8

13.

As we know that smoke is the combination of hot airs and hot air becomes light weight with respect to cold air. Thus, it always rises up.

14.

Factors like wind speed, wind direction, temperature and humidity contribute to the development of cyclones.

15.

Hurricane and typhoon are the other names of cyclone.

16.

Chandigarh is unlikely to be affected by a cyclone because it is not near to the sea or an ocean.

Generic 5

2 x 5 = 10

17.

Take a boiling tube. Stretch a balloon tightly over the neck of the tube. Pour some hot water in a beaker. Insert the boiling tube with the balloon in the hot water. Observe for any change in shape of balloon. We see that balloon lifts upward. Take the tube out, let it cool down to the room temperature. Take some ice cold water in another beaker and place the boiling tube in it. The balloon inflates when the boiling tube is placed in hot water. But the same balloon deflates when tube is kept in cold water. This activity shows that warm air rises up and warm air is lighter than the cold air. In this way, we can say that difference in temperature also involved in making speed of wind.

18.

In the given figure, the tree line along the sea coast on an island near the equator shows that tree tops are permanently bent in one direction. The reason behind this movement of tree is that during the day time the wind blows from sea to land because land gets warmer more quickly than sea.
This makes the air of land, warm and lighter which is raised up in the sky. Therefore, the top of the bent trees shows the moving direction of wind from sea to land.

True or False

5 x 1 = 5

19.

(b)
False

20.

(a)
False

21.

(a)
False

22.

(a)
False

23.

(a)
False

Match the following

5 x 1 = 5

24.

()
Moving air

25.

()
Winds carrying water

26.

()
Occurs in Western Pacific region

27.

()
Measures the speed of wind

28.

()
descends and contracts

1 Marks

10 x 1 = 10

29.

()
To avoid the roof getting blown away due to the low pressure created by heavy wind.

30.

()
Steel is a good conductor of electricity. Due to this reason, steel chimneys do not require lightning conductor. They themselves pass the discharge to the earth.

31.

()
Lightning can cause fires in high rise buildings and trees on which it strikes.

32.

()
The centre of cyclone is known as the eye of the storm.

33.

()
When air gets saturated with water vapour, it rains.

34.

()
The winds from the ocean raise water and bring rain. It is a part of the water cycle.

35.

()
Yes.

36.

()
This happens when the pressure of air between the balloons is some what reduced. The pressure outside the balloons would then thrust them towards each other.

37.