Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 647 · 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 see-saw is a lever. (a) False (b) True
2. 2.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
3. 3.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a magnet (c) turmeric powder (d) a small paper cup
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) a small paper cup (d) an empty thread reel
6. 6.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
7. 7.⚖️ 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
8. 8.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
9. 9.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) coins as the load (c) an empty thread reel (d) yeast
11. 11.True or false: a crowbar is a wheel and axle. (a) False (b) True
12. 12.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
13. 13.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a pencil (c) an empty thread reel (d) coins as the load
15. 15.⚙️ Which simple machine is a sloping road? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
16. 16.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
17. 17.True or false: a see-saw uses a pulley. (a) True (b) False
18. 18.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 20 cm (d) 5 cm
19. 19.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it gets wet (d) it can hurt your finger
20. 20.⚖️ 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
21. 21.True or false: a ramp uses a pulley. (a) True (b) False
22. 22.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a pencil (d) coins as the load
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
25. 25.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the flagpole (d) on the bench
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) number of pulleys (b) the same cup of coins (c) the lifting height (d) how hard we must pull
27. 27.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
28. 28.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
29. 29.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
30. 30.⚙️ Which of these uses a pulley? (a) a tap handle (b) a see-saw (c) a bottle opener (d) a crane
31. 31.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) the same (d) harder
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) how hard we must pull (c) number of pulleys
34. 34.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
38. 38.True or false: a slide is a wheel and axle. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) an empty thread reel (d) a pencil

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