HARD
6th CBSE
IMPORTANT
Earn 100

Is it correct to say that all physical changes are reversible? Support your answer with two examples.

Important Questions on Changes Around Us

EASY
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>Try These>Q 1
Sharpening the pencil is an example of (fast/slow) change.
EASY
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>Try These>Q 2

Blowing of winds, cyclones and the phenomena of earthquakes are _____ changes. (In terms of periodic and non-periodic changes)

EASY
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>Try These>Q 3
Melting of ice cream is an example of reversible / irreversible change.
MEDIUM
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q F
Why are small gaps left between the railway tracks?
MEDIUM
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q H
A potter uses clay to mould it into different shapes using the wheel. Then he bakes it in the oven. What kind of changes are these?
MEDIUM
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q H
The burning of LPG in a gas stove involves both physical and chemical changes. Give any other example of the same kind from everyday life.
HARD
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>EXERCISES>Q H
The height of a baby increases as it grows. When a cake mixture is baked, it slowly expands. Are these changes of the same kind?
MEDIUM
6th CBSE
IMPORTANT
Focus Science 6>Chapter 6 - Changes Around Us>EXERCISES>Suggested Activities

Cutting of trees is desired by some people for their selfish motives. Cutting of trees indiscriminately is called deforestation. Deforestation makes the land barren. It increases soil erosion and hence desert formation.

What measures do you think should be taken against people responsible for deforestation?