Worksheet: Light, Sound and Force - Notes | Study Science for Class 3 - Class 3

MCQs

Question 1: Light helps us to
(a) listen
(b) speak
(c) see
(d) eat

Question 2: Which of these is true for your shadow?
(a) It is always black.
(b) It is of the same colour as your clothes.
(c) It is always the same size as you.
(d) It is only for med when it is dark.

Question 3: Which of these is a pull?
(a) Kicking
(b) Lifting
(c) Hitting
(d) All of these

Question 4: Which of these kinds of substances allows the least amount of light to pass through?
(a) Transparent
(b) Translucent
(c) Opaque
(d) Glass

Question 5: In which of these is a force not being applied?
(a) Reading a book
(b) Trying to push a table
(c) Kicking a football
(d) Throwing up a ball

Give two examples of the following.

Question 6:
(a) Transparent things ________________ ________________
(b) Push ________________ ________________
(c) Pleasant sound ________________ ________________
(d) Pull ________________ ________________

True & False

Question 7:

• Light travels in straight lines.
• Unpleasant sound can cause headache.
• A force can change the weight of an object.
• We can clearly see through opaque objects.
• We use force only when we push something.

Tick the sounds which you think will make you happy.

Question 8:
(a) Birds chirping    ()
(b) Cars honking    ()
(c) Rustling leaves    ()
(d) Someone singing softly    ()
(e) Loud music    ()
(f) Children quarrelling    ()

Fill in the blanks

Question 9:
(a) Beam of light is called _____________ .
(b) Unpleasant sound is called _____________ .
(c) Force can change the _____________ of a moving object.
(d) A shadow for ms on the _____________ side of the light.
(e) A push or pull is a _____________ .

Match the following

Question 10:
(a) Sun           (i) Light rays blocked
(b) Opaque    (ii) Natural source of light

(c) Candle     (iii) Cannot see through it
(d) Shadow    (iv) Unpleasant sound
(e) Noise      (v) Artificial source of light

Answer the following questions

Question 11: What is the difference between luminous and non-luminous objects? Give two examples of each.

Question 12: What is the difference between transparent and translucent objects? Give two examples of each.

Question 13: How is a shadow formed?

Question 14: What can force do?