Changes Around Us Class 6 Worksheet Science

Q1: Multiple Choice Questions (MCQs)

(i) Which of the following is an example of a fast change?
(a) Aging of the human body
(b) Growth of a mango seedling
(c) Burning of paper
(d) Formation of coal

(ii) What type of change is rusting of iron considered?
(a) Desirable change
(b) Reversible change
(c) Irreversible change
(d) Chemical change

(iii) Which of the following is an example of a reversible change?
(a) Water freezing into ice
(b) Cooking food
(c) Formation of salt solution
(d) Aging of the human body

(iv) What is the key difference between physical and chemical changes?
(a) Physical changes are always reversible, and chemical changes are not.
(b) Physical changes form new substances, while chemical changes do not.
(c) Physical changes affect the physical properties of a substance, while chemical changes involve a change in state.
(d) Physical changes involve the release of energy, while chemical changes use energy.

(v) Which of the following is a desirable change?
(a) Rotting of fruits
(b) Burning of paper
(c) Growth of plants from seeds
(d) Rusting of iron

Q2: Fill in the Blanks

(i) Water vapor changing back into water is an example of a ____________ change.
(ii) A change that affects only the physical properties of matter is called a ____________ change.
(iii) Undesirable changes are those that are harmful or not ____________.
(iv) The formation of crude oil, coal, and some rocks is an example of ____________ changes, which take millions of years.
(v) When wood burns, it undergoes a ____________ change and produces heat and light energy.

Q3: Match the Column (In a Table)

Match the items in Column A with their corresponding descriptions in Column B.

Q4: True or False

(i) Desirable changes are harmful and not beneficial.
(ii) Reversible changes cannot be changed back to their original form.
(iii) All chemical changes are irreversible changes.
(iv) The formation of coal from wood is a fast change.
(v) Physical changes always involve a change in the chemical composition of a substance.

You can access the solutions to this worksheet here.