Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 789 · 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 wheel and axle? (a) a see-saw (b) a doorknob (c) a crane (d) a spoon lifting a lid
2. 2.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
3. 3.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
5. 5.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crane (c) a crowbar (d) a ramp
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
7. 7.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) coins as the load (d) a magnet
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a pencil (d) turmeric powder
11. 11.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
12. 12.True or false: a crane uses a pulley. (a) True (b) False
13. 13.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
14. 14.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a balloon (d) coins as the load
16. 16.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull
18. 18.True or false: a sloping road is an inclined plane. (a) False (b) True
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a pencil (d) coins as the load
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) coins as the load (d) turmeric powder
21. 21.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
22. 22.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
23. 23.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
24. 24.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a doorknob (c) a crane (d) a well pulley
25. 25.True or false: a flagpole is a lever. (a) True (b) False
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) string (d) coins as the load
27. 27.True or false: a steering wheel is a lever. (a) True (b) False
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) an empty thread reel (d) a magnet
30. 30.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
31. 31.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
32. 32.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.True or false: a well pulley is a lever. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
38. 38.True or false: a sloping road uses a pulley. (a) True (b) False
39. 39.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) down (d) up
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the same string (c) the same cup of coins (d) how hard we must pull

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