Match Column I with Column II. There can be more than one match. Column I Column II (a) On heating air (p) Descends (b) On cooling air (q) Expands (r) Contracts (s) Rises

(a) On heating air - (q) expands and (s) rises On heating air, it expands and occupies more space. When the same mass occupies more volume, it becomes lighter. This causes the air to rise. (b) On cooling air - (p) descends and (r) contracts On cooling air, it contracts and its density increases. This causes the air to descend. Column I Column II (a) On heating air (q) Expands (s) Rises (b) On cooling air (p) Descends (r) Contracts

E M B I B E

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>VERY SHORT ANSWER QUESTIONS>Q 12

MEDIUM

7th CBSE

IMPORTANT

Earn 100

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

Important Questions on Wind, Storm and Cyclone

MEDIUM

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>VERY SHORT ANSWER QUESTIONS>Q 13

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.

MEDIUM

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>VERY SHORT ANSWER QUESTIONS>Q 14

The figure below shows a diagrammatic representation of trees in the afternoon along a seacoast. State on which side is the sea;

A

or

B

? Give reasons for your choice.
Question Image

MEDIUM

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>VERY SHORT ANSWER QUESTIONS>Q 15

A flag mounted on a flag post near the sea coast flutters in the direction of sea. At what time of the day does this happen - at midnight or in the afternoon?

EASY

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>SHORT ANSWER QUESTIONS>Q 16

Match Column I with Column II. There can be more than one match.

Column I	Column II
(a) On heating air	(p) Descends
(b) On cooling air	(q) Expands
	(r) Contracts
	(s) Rises

EASY

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>SHORT ANSWER QUESTIONS>Q 17

Paheli kept an empty bottle made of plastic inside a refrigerator. After a few hours, when she opened the refrigerator she found the bottle had collapsed. Explain the possible reason.

EASY

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>SHORT ANSWER QUESTIONS>Q 18

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

EASY

7th CBSE

IMPORTANT

NCERT Exemplar Science - Class 7>Chapter 8 - Wind, Storm and Cyclone>SHORT ANSWER QUESTIONS>Q 19

Suggest some precautions to be taken to prevent the roof of a tin sheet from flying away during a fierce windstorm.

EASY

7th CBSE