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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
Multiple Choice Questions (MCQs)
(i) Which object spins properly?
(a) Eraser
(b) Coin
(c) Stone
(d) Pencil
Answer:
(b) Coin
(ii) Where should the toothpick be placed in a spinner?
(a) At the edge
(b) At the center
(c) At the corner
(d) Outside
Answer:
(b) At the center
(iii) What makes a paper boat float?
(a) Heavy weight
(b) Light material
(c) Small size
(d) Wet paper
Answer:
(b) Light material
(iv) What happens to aluminum foil when pressed into a tight ball?
(a) It floats
(b) It spins
(c) It sinks
(d) It balances
Answer:
(c) It sinks
(v) What is a traditional Indian spinning top called?
(a) Charkha
(b) Lattu
(c) Wheel
(d) Fan
Answer:
(b) Lattu
True or False
(i) All objects spin properly.
Answer:
False
(ii) A square spinner looks circular when spun.
Answer:
True
(iii) Heavy objects always sink.
Answer:
False
(iv) A paper boat flips if unbalanced.
Answer:
True
(v) A charkha spins to make thread.
Answer:
True
Fill in the blanks
Fill in the blanks with the help of words given in the box.
| Float, Balance , Sink, Shape , Spin |
(i) A coin can _______ when you flick it.
(ii) A leaf will _______ on water.
(iii) A stone will _______ in water.
(iv) A spinner needs _______ to stay upright.
(v) The _______ of foil affects floating.
Answer:
(i) Spin
(ii) Float
(iii) Sink
(iv) Balance
(v) Shape
Match the Following
Match the object in Column A with its behavior in Column B.
Answer:
A – 3
B – 1
C – 2
D – 4
Unscramble The Letters
Unscramble the letters to find words from the chapter.
(j) NIPSS __________
(ii) AFOTL _______
(iii) KINS _______
(iv) OTAB _______
(v) PREAP _______
Answer:
(i) SPINS
(ii) FLOAT
(iii) SINK
(iv) BOAT
(v) PAPER
Very Short Answer Type Questions
(i) Name one object that spins.
____________________________
(ii) What changes occur to a leaf when it is in water, and why?
____________________________
(iii) Name one heavy object that sinks.
____________________________
(iv) What is one material you could use to build a boat that floats?
____________________________
Short Answer Type Questions
(i) Why does a coin shake when it slows down?
____________________________
(ii) How does the shape of aluminum foil affect floating?
____________________________
Long Answer Type Questions
(i) Describe how Meera and Dhruv explored spinning objects. What did they learn about spinners?
____________________________
(ii) Imagine you made a boat for a class exhibition. What did you use, and how did you test it?
____________________________
Picture-Based Question
Answer the questions based on the picture.
(i) What is the object shown in the picture?
____________________________
(ii) Why is it spinning?
____________________________
Answer:
Activity
Question 1.
Reflect and Write
Think like a scientist! Write 2-3 sentences to answer,
(i) Why do some objects float and others sink?
____________________________
____________________________
(ii) How can you improve a spinner’s balance?
____________________________
____________________________
Answer:
Question 2.
Sort these habits for experimenting. Write good habits in a star and bad habits in a circle.
(i) Throwing objects in water
(ii) Observing spinning carefully
(iii) Recording observations
(iv) Using broken spinners
Answer:
| Good Habits | Bad Habits |
| (ii) Observing spinning carefully | (i) Throwing objects in water |
| (iii) Recording observations | (iv) Using broken spinners |
Question 3.
Find and circle the words hidden in the box. These are from Meera’s experiments.
Words to find
(i) Clean pencil marks.
(ii) Shiny, small and round.
(iii) A spinning action.
(iv) Goes to the bottom.
(v) Stays on water.
(vi) A spinning toy.
Answer:
Question 4.
Design a Spinner
Make a spinner using cardboard and a toothpick. Include
- The shape (“Circle”)
- Its colour (“Red and blue”)
- A short note (“It spins fast!”)
____________________________