Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 480 · 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.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
2. 2.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚙️ Which of these uses a pulley? (a) a sloping road (b) a flagpole (c) a tap handle (d) a see-saw
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a pencil (d) coins as the load
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the lifting height
6. 6.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
7. 7.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
11. 11.True or false: a well pulley is an inclined plane. (a) False (b) True
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a balloon (d) an empty thread reel
13. 13.True or false: a sloping road is an inclined plane. (a) True (b) False
14. 14.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) string (c) a balloon (d) turmeric powder
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) an empty thread reel (c) a pencil (d) a small paper cup
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the lifting height
20. 20.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
22. 22.True or false: a steering wheel uses a pulley. (a) True (b) False
23. 23.True or false: a steering wheel is a lever. (a) False (b) True
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a battery cell
25. 25.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
26. 26.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a ramp (c) a bottle opener (d) a doorknob
27. 27.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
29. 29.⚖️ 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
30. 30.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
31. 31.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
33. 33.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a see-saw (c) a doorknob (d) a flagpole
34. 34.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) adds weight (d) halves the weight
35. 35.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
36. 36.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
37. 37.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
38. 38.⚖️ 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) number of pulleys (c) the same cup of coins
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever

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