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>SHORT ANSWER QUESTIONS

NCERT Solutions for Chapter: Wind, Storm and Cyclone, Exercise 3: SHORT ANSWER QUESTIONS

Author:NCERT

NCERT Science Solutions for Exercise - NCERT Solutions for Chapter: Wind, Storm and Cyclone, Exercise 3: SHORT ANSWER QUESTIONS

Attempt the practice questions on Chapter 8: Wind, Storm and Cyclone, Exercise 3: SHORT ANSWER QUESTIONS with hints and solutions to strengthen your understanding. NCERT Exemplar Science - Class 7 solutions are prepared by Experienced Embibe Experts.

Questions from NCERT Solutions for Chapter: Wind, Storm and Cyclone, Exercise 3: SHORT ANSWER QUESTIONS with Hints & Solutions

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.