Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 226 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) a mirror
2. 2.⚙️ Which simple machine is a doorknob? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
3. 3.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets longer (d) it gets wet
4. 4.True or false: a slide uses a pulley. (a) False (b) True
5. 5.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
6. 6.True or false: a doorknob is a lever. (a) True (b) False
7. 7.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
10. 10.⚙️ Which of these uses a pulley? (a) a crowbar (b) a spoon lifting a lid (c) a well pulley (d) a ramp
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a small paper cup (c) string (d) a pencil
12. 12.True or false: a tap handle is a wheel and axle. (a) False (b) True
13. 13.🧺 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) a balloon
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 change it (b) we keep it the same (c) we measure it
15. 15.⚖️ 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
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
17. 17.⚙️ Which of these uses a pulley? (a) a doorknob (b) a crowbar (c) a slide (d) a flagpole
18. 18.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
21. 21.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
22. 22.🔮 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
23. 23.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
24. 24.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
25. 25.True or false: string is needed for the thread-reel pulley. (a) True (b) False
26. 26.True or false: a see-saw is a lever. (a) True (b) False
27. 27.True or false: a doorknob uses a pulley. (a) False (b) True
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) turmeric powder (d) an empty thread reel
29. 29.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it gets hot (d) it might sing
30. 30.True or false: a doorknob is an inclined plane. (a) False (b) True
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a balloon (d) coins as the load
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) coins as the load (d) a pencil
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the same string (c) how hard we must pull (d) the lifting height
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.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a crowbar (c) a steering wheel (d) a sloping road
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) yeast (d) a pencil
37. 37.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
38. 38.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a small paper cup (c) a balloon (d) yeast
40. 40.⚙️ Which of these is a lever? (a) a slide (b) a ramp (c) a bottle opener (d) a well pulley

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