Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 649 · 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.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
2. 2.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
6. 6.⚖️ 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
7. 7.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) rope (d) battery
8. 8.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) sideways (d) in a circle
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) coins as the load (d) a balloon
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) string (d) a pencil
11. 11.⚙️ Which simple machine is a slide? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.True or false: a ramp is a lever. (a) False (b) True
15. 15.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
16. 16.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
17. 17.⚖️ 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
18. 18.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
19. 19.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
20. 20.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
21. 21.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a ramp (d) a steering wheel
22. 22.⚖️ 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) how hard we must pull (d) the same string
23. 23.⚖️ 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
24. 24.True or false: a see-saw is a lever. (a) False (b) True
25. 25.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a balloon (d) a small paper cup
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) coins as the load (d) yeast
28. 28.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
30. 30.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
31. 31.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
32. 32.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) an empty thread reel (d) turmeric powder
34. 34.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
35. 35.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) string (c) coins as the load (d) a small paper cup
39. 39.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
40. 40.⚖️ 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

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