Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 233 · 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: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
2. 2.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a flagpole (c) a sloping road (d) a tap handle
3. 3.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) coins as the load (d) an empty thread reel
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
6. 6.True or false: a crowbar is a lever. (a) False (b) True
7. 7.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a battery cell (d) a balloon
9. 9.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) makes it magnetic (c) halves the weight (d) changes pull direction
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) yeast (d) an empty thread reel
12. 12.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
13. 13.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a flagpole (c) a crowbar (d) a tap handle
14. 14.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
15. 15.⚖️ 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 cup of coins
16. 16.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
17. 17.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a sloping road (c) a spoon lifting a lid (d) a flagpole
18. 18.🧺 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) an empty thread reel
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a mirror (d) string
20. 20.⚖️ 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 string
21. 21.True or false: a flagpole is a lever. (a) False (b) True
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 string (c) the same cup of coins (d) the lifting height
23. 23.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) turmeric powder (c) a balloon (d) yeast
25. 25.True or false: a crane uses a pulley. (a) True (b) False
26. 26.⚙️ Which of these uses a pulley? (a) a slide (b) a see-saw (c) a crowbar (d) a well pulley
27. 27.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
28. 28.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) battery (d) magnet
29. 29.True or false: a sloping road is an inclined plane. (a) True (b) False
30. 30.⚖️ 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
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
33. 33.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
34. 34.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a balloon (d) a pencil
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) a magnet (d) string
37. 37.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
38. 38.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
39. 39.⚙️ Which of these is an inclined plane? (a) a slide (b) a steering wheel (c) a well pulley (d) a flagpole
40. 40.⚖️ 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

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