Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 704 · 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 not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) string (d) a magnet
2. 2.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it can hurt your finger (d) it turns blue
3. 3.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) yeast (d) coins as the load
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) string (d) yeast
7. 7.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a ramp (c) a tap handle (d) a doorknob
8. 8.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
9. 9.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) string (d) turmeric powder
11. 11.⚖️ 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
12. 12.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (d) it could fall on you
13. 13.⚖️ 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 same string (c) number of pulleys (d) how hard we must pull
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) string (d) coins as the load
16. 16.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.True or false: a well pulley uses a pulley. (a) False (b) True
20. 20.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
21. 21.⚖️ 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) False (b) True
22. 22.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) an empty thread reel (d) a magnet
24. 24.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) an empty thread reel (d) a pencil
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a magnet (d) a pencil
27. 27.⚙️ Which simple machine is a well pulley? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
28. 28.True or false: a bottle opener is a lever. (a) True (b) False
29. 29.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) the same (d) double
30. 30.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
31. 31.True or false: a crowbar is a lever. (a) False (b) True
32. 32.🧺 Do we need an empty thread reel 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 lifting height”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.⚖️ 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 string (d) the same cup of coins
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
37. 37.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
38. 38.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
40. 40.⚖️ 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 change it (b) we measure it (c) we keep it the same

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