Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 851 · 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.True or false: a see-saw is a lever. (a) True (b) False
2. 2.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
5. 5.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a sloping road (d) a well pulley
6. 6.True or false: string is needed for the thread-reel pulley. (a) True (b) False
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a balloon (d) a pencil
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) coins as the load (d) string
10. 10.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
11. 11.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
12. 12.⚖️ 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 cup of coins (c) the lifting height (d) how hard we must pull
13. 13.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
14. 14.True or false: a bottle opener is an inclined plane. (a) False (b) True
15. 15.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) sideways (d) in a circle
16. 16.True or false: a crowbar uses a pulley. (a) True (b) False
17. 17.⚖️ 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) True (b) False
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a small paper cup (d) a balloon
19. 19.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
20. 20.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) a battery cell
22. 22.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
23. 23.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) magnet (d) battery
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a magnet (c) turmeric powder (d) a battery cell
25. 25.⚖️ 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
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the lifting height (c) number of pulleys
27. 27.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
30. 30.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) yeast (d) string
32. 32.⚙️ Which of these uses a pulley? (a) a crane (b) a steering wheel (c) a see-saw (d) a ramp
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) coins as the load (d) an empty thread reel
34. 34.⚙️ Which of these is a wheel and axle? (a) a slide (b) a steering wheel (c) a flagpole (d) a sloping road
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
36. 36.True or false: a crane uses a pulley. (a) False (b) True
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) pulling down is easier (d) the rope gets shorter
38. 38.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
39. 39.True or false: a sloping road is an inclined plane. (a) True (b) False
40. 40.True or false: a slide is an inclined plane. (a) False (b) True

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