Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 262 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.⚙️ Which of these is a lever? (a) a well pulley (b) a crane (c) a slide (d) a spoon lifting a lid
2. 2.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
4. 4.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) adds weight (d) changes pull direction
5. 5.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) sideways (d) up
6. 6.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a small paper cup (d) turmeric powder
10. 10.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
11. 11.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
12. 12.True or false: a bottle opener is a lever. (a) False (b) True
13. 13.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 10 cm (d) 40 cm
14. 14.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
15. 15.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
17. 17.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a ramp (c) a tap handle (d) a steering wheel
18. 18.True or false: a see-saw is a wheel and axle. (a) True (b) False
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a balloon
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
22. 22.⚙️ Which of these uses a pulley? (a) a ramp (b) a bottle opener (c) a well pulley (d) a doorknob
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a magnet
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a battery cell (d) a magnet
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a small paper cup (d) string
26. 26.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
27. 27.True or false: a sloping road is an inclined plane. (a) True (b) False
28. 28.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
29. 29.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a battery cell (d) string
31. 31.True or false: a flagpole is a lever. (a) False (b) True
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) coins as the load (d) string
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) coins as the load (d) turmeric powder
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) a small paper cup (d) an empty thread reel
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) False (b) True
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) the same string (d) the same cup of coins
38. 38.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚙️ Which simple machine is a well pulley? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
40. 40.True or false: string is not needed for the thread-reel pulley. (a) False (b) True

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