Q1. Name one object that can spin easily.
Ans: Coin.
Q2. Name one object that does not spin properly.
Ans: Eraser.
Q3. What does a charkha do?
Ans: It spins cotton fibre into thread for making cloth.
Q4. Who used the charkha for making handmade clothes?
Ans: Mahatma Gandhi.
Q5. What happens when a square spinner is spun?
Ans: It appears circular when it spins.
Q6. What Indian toy is similar to a spinning top?
Ans: Lattu.
Q7. What material was used to make tops in earlier times?
Ans: Clay.
Q8. What happens to an iron nail when placed in water?
Ans: It sinks to the bottom of the water.
Q9. What happens to a leaf when placed in water?
Ans: It floats on the water.
Q10. What factor, besides weight, affects floating and sinking?
Ans: The shape of the object.
Q11. What happens when aluminium foil is pressed into a tight ball?
Ans: It sinks to the bottom of the water.
Q12. Name one object that floats on water.
Ans: Empty plastic bottle.
Q13. Name one object that sinks in water.
Ans: Coin.
Q14. What should be used to make paper boats?
Ans: Paper, cardboard, or ice-cream sticks.
Q15. What kind of toy helps us learn about floating and sinking?
Ans: Paper boat.