Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 947 · 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 doorknob is an inclined plane. (a) True (b) False
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) yeast
3. 3.⚖️ 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
4. 4.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) adds weight (d) changes pull direction
5. 5.True or false: a slide is an inclined plane. (a) True (b) False
6. 6.⚙️ Which of these uses a pulley? (a) a flagpole (b) a spoon lifting a lid (c) a tap handle (d) a ramp
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) string (d) a balloon
8. 8.⚖️ 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 cup of coins
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
10. 10.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
11. 11.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
13. 13.True or false: a sloping road uses a pulley. (a) True (b) False
14. 14.⚖️ 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 change it (c) we measure it
15. 15.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) a magnet (d) yeast
17. 17.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a slide (c) a see-saw (d) a bottle opener
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) the same string (c) number of pulleys
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same string
21. 21.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
22. 22.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a balloon (d) a pencil
24. 24.True or false: string is needed for the thread-reel pulley. (a) False (b) True
25. 25.⚙️ Which of these uses a pulley? (a) a crane (b) a spoon lifting a lid (c) a see-saw (d) a steering wheel
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) coins as the load (d) a pencil
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a magnet (d) string
29. 29.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
30. 30.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
31. 31.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a bottle opener (c) a crowbar (d) a steering wheel
32. 32.True or false: a flagpole uses a pulley. (a) False (b) True
33. 33.True or false: a tap handle is an inclined plane. (a) True (b) False
34. 34.⚖️ 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
35. 35.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
37. 37.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) string (d) coins as the load
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys 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) an empty thread reel (b) a small paper cup (c) turmeric powder (d) string

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