How Things Work Class 4 Worksheet with Answers EVS Chapter 7

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How Things Work Class 4 EVS Worksheet Chapter 7

Class 4 EVS How Things Work Worksheet

Class 4 EVS Chapter 7 Worksheet – Class 4 How Things Work Worksheet

A. Answer the Following Questions:

Question 1.
Which objects around you can spin? List 3 objects that spin well and 3 that do not.

✓ Objects that spin well:

1. ______________________________________________
2. ______________________________________________
3. ______________________________________________

✗ Objects that don’t spin well:

1. ______________________________________________
2. ______________________________________________
3. ______________________________________________

Question 2.
What happens to a coin when it slows down after spinning?

______________________________________________
______________________________________________

Question 3.
What material is commonly used to make a spinner at home?
______________________________________________
______________________________________________

Question 4.
What happens if an object is very small and heavy?
______________________________________________
______________________________________________

Question 5.
Which Indian spinning toy is made of wood?
______________________________________________
______________________________________________

Question 6.
What do you think makes a bangle spin better than a stone?
______________________________________________
______________________________________________

Question 7.
Can a pencil spin like a top?

______________________________________________
______________________________________________

Question 8.
Why do boats float even though they are heavy?

______________________________________________
______________________________________________

Question 9.
Name one thing in your kitchen that spins.
______________________________________________
______________________________________________

Question 10.
What shape does a square card look like when spinning?
______________________________________________
______________________________________________

Question 11.
What floats: a steel spoon or a big plastic bowl?

______________________________________________
______________________________________________

Objective Type Questions

A. Fill in the Blanks with the correct words.

Question 1.
A spinner spins best when the hole is in the ________________

Question 2.
A ceiling ________________ is an example of something that spins.

Question 3.
A piece of ________________ does not spin well.

Question 4.
A ________________ shape helps objects spin better.

Question 5.
A ________________ is placed through the centre to help the spinner spin.

Question 6.
A small but heavy object, like a coin, will usually ________________

Question 7.
Testing objects in ________________ helps us learn if they float or sink.

Question 8.
________________ objects are more likely to float.

Question 9.
A boat does not sink because of its ________________ shape.

B. State whether the following statements are ‘True’ or ‘False’.

Question 1.
We can change an object’s shape to help it float. ________________

Question 2.
Heavy objects always sink in water. ________________

Question 3.
The shape of an object affects whether it floats or sinks. ________________

Question 4.
Boats float because they are light. ________________

Question 5.
A wide surface helps spread the weight of an object. ________________

Question 6.
Heavy objects like erasers always spin well. ________________

Question 7.
When spinners spin fast, the colours on them may mix and look like one colour. ________________

Question 8.
Spinners made in different shapes always look the same while spinning. ________________

Question 9.
A hole in the centre helps a spinner stay balanced. ________________

Question 10.
Changing the size or shape of a spinner can help it spin better. ________________

C. Circle the objects that would float:

D. Given below are some jumbled letters. Unjumble the letters to get meaningful words.

All the words are related to spinning toys or floating and sinking. You can use the hints given in the brackets.

Question 1.
NICO ________________
(Hint: A round object that can spin.)

Question 2.
NBLGAE ________________
(Hint: Worn on hands, can also spin!)

Question 3.
RNENISP ________________
(Hint: A toy that spins.)

Question 4.
RTAEW ________________
(Hint: We float or sink in it.)

Question 5.
TLOFA ________________
(Hint: What do some objects do on water?)

Question 6.
NSIK ________________
(Hint: What happens when an object goes underwater?)

Question 7.
DROABACRD ________________
(Hint: A material used to make spinners.)

Question 8.
PEHSA ________________
(Hint: Round, square, triangle… all are different.)

Question 9.
LHOE ________________
(Hint: A small circle in the centre of a spinner.)

Question 10.
TOMOIN ________________
(Hint: Movement or action, like spinning!)

E. Answer the following questions by choosing the correct options:

Question 1.
Which of these objects can spin?

(а) Eraser
(b) Coin
(c) Stone
(d) All of the above

Question 2.
Which of these is most likely to float in water?

(a) A sharp needle
(b) A flat plastic plate
(c) A big stone
(d) A metal ball

Question 3.
Which of these is most likely to spin well?

(a) Bangle
(b) Eraser
(c) Stone
(d) Rubber band

Question 4.
What helps a spinner stay balanced and spin better?

(a) A heavy stone
(b) A hole at the centre
(c) Sharp corners
(d) Long strings

Question 5.
Why do boats float on water even though they are heavy?
(a) They are made of rubber
(b) They have a wide shape that spreads out their weight
(c) They have holes in them
(d) They are made of plastic

Question 6.
What happens when you spin a colourful spinner very fast?
(a) It changes shape
(b) It looks like a new colour or a circle
(c) It slows down immediately
(d) It starts shaking

F. Match the following. Draw a line to match each item in Column A with its correct description in Column B:

Activities

A. Design a toy that can float in water! Draw your design below and explain why it will float.

Why will it float?

1. I used a ________________ shape to help it stay on top of the water.
2. I chose ________________ material because it is light and helps the toy stay afloat.
3. I made the toy ________________ (wide/narrow) to make sure it floats.

B. Find the names of toys by looking at pictures and complete the puzzle.

C. Given below is a Lattu (top). Trace and colour it using pencil colours of your choice:

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