Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 863 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) an empty thread reel (c) string (d) a small paper cup
2. 2.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a doorknob (c) a sloping road (d) a crowbar
3. 3.True or false: a crowbar is a lever. (a) True (b) False
4. 4.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
5. 5.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
6. 6.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.True or false: a flagpole uses a pulley. (a) False (b) True
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) number of pulleys (c) the same string (d) how hard we must pull
10. 10.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
11. 11.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a magnet (d) a pencil
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a balloon (d) a pencil
14. 14.True or false: a balloon is not 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 gets longer (d) it can hurt your finger
16. 16.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
17. 17.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
18. 18.⚖️ 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 string
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) the same cup of coins (c) the lifting height (d) number of pulleys
20. 20.⚖️ 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 measure it (c) we change it
21. 21.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
22. 22.⚖️ 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
23. 23.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a doorknob (c) a bottle opener (d) a ramp
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) False (b) True
25. 25.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
26. 26.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
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) True (b) False
30. 30.True or false: a bottle opener uses a pulley. (a) True (b) False
31. 31.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) easier (d) harder
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a magnet (d) coins as the load
34. 34.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
35. 35.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) turmeric powder (d) string
37. 37.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) a pencil (d) coins as the load
39. 39.⚖️ 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
40. 40.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True

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