Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 979 · 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 needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a battery cell (d) a small paper cup
2. 2.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
3. 3.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) string (d) yeast
5. 5.True or false: a sloping road is a lever. (a) True (b) False
6. 6.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a balloon (c) string (d) a pencil
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) coins as the load (d) a mirror
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a magnet (d) a small paper cup
10. 10.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
11. 11.True or false: a bottle opener uses a pulley. (a) True (b) False
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
13. 13.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a well pulley (c) a ramp (d) a spoon lifting a lid
14. 14.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
15. 15.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
16. 16.⚙️ Which of these is a wheel and axle? (a) a crane (b) a slide (c) a steering wheel (d) a well pulley
17. 17.⚖️ 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) True (b) False
18. 18.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) makes it magnetic (d) adds weight
19. 19.True or false: a spoon lifting a lid is a lever. (a) False (b) True
20. 20.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a small paper cup (c) an empty thread reel (d) coins as the load
23. 23.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
24. 24.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a see-saw (c) a sloping road (d) a bottle opener
25. 25.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
26. 26.⚖️ 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 cup of coins (b) the lifting height (c) number of pulleys (d) how hard we must pull
27. 27.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
28. 28.True or false: a see-saw is a lever. (a) True (b) False
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.True or false: a crowbar is a lever. (a) True (b) False
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
32. 32.⚖️ 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) the lifting height (c) the same string (d) how hard we must pull
33. 33.True or false: a see-saw is a wheel and axle. (a) True (b) False
34. 34.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same string
36. 36.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) turmeric powder
38. 38.⚙️ Which of these uses a pulley? (a) a see-saw (b) a bottle opener (c) a slide (d) a well pulley
39. 39.⚖️ 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) True (b) False
40. 40.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False

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