Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 648 · 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 flagpole uses a pulley. (a) False (b) True
2. 2.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
3. 3.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
5. 5.⚖️ 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 same cup of coins (c) number of pulleys
6. 6.⚙️ Which of these uses a pulley? (a) a flagpole (b) a tap handle (c) a steering wheel (d) a bottle opener
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
8. 8.True or false: a ramp is an inclined plane. (a) False (b) True
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) a small paper cup (d) string
11. 11.⚖️ 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 same cup of coins (c) the lifting height (d) how hard we must pull
12. 12.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a balloon (d) a magnet
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
15. 15.⚖️ 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
16. 16.True or false: a crane is a wheel and axle. (a) False (b) True
17. 17.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
18. 18.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) string (d) yeast
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
21. 21.⚙️ Which of these uses a pulley? (a) a crane (b) a see-saw (c) a doorknob (d) a slide
22. 22.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
23. 23.True or false: a see-saw is a wheel and axle. (a) True (b) False
24. 24.⚖️ 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
25. 25.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
26. 26.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a magnet (c) string (d) an empty thread reel
28. 28.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
29. 29.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
30. 30.⚙️ Which of these uses a pulley? (a) a well pulley (b) a ramp (c) a sloping road (d) a steering wheel
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) coins as the load (d) a mirror
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
33. 33.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
34. 34.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) yeast (d) coins as the load
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) yeast
37. 37.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
39. 39.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
40. 40.⚙️ Which of these is a lever? (a) a bottle opener (b) a crane (c) a slide (d) a tap handle

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