Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 81 · 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 spoon lifting a lid is an inclined plane. (a) True (b) False
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a mirror (c) turmeric powder (d) a battery cell
3. 3.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
5. 5.⚙️ Which of these is a lever? (a) a doorknob (b) a well pulley (c) a slide (d) a bottle opener
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) turmeric powder (d) string
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a magnet (d) a balloon
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a balloon
10. 10.True or false: a slide uses a pulley. (a) False (b) True
11. 11.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) string (d) a magnet
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a battery cell (c) string (d) a small paper cup
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) yeast (d) a small paper cup
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) how hard we must pull (b) the same string (c) number of pulleys (d) the lifting height
16. 16.True or false: a tap handle is a wheel and axle. (a) False (b) True
17. 17.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
18. 18.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
19. 19.⚙️ Which of these uses a pulley? (a) a see-saw (b) a well pulley (c) a ramp (d) a crowbar
20. 20.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
21. 21.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) a pencil (d) a small paper cup
23. 23.True or false: a well pulley is a lever. (a) False (b) True
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
25. 25.⚙️ Which of these is an inclined plane? (a) a slide (b) a see-saw (c) a tap handle (d) a bottle opener
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) a battery cell (d) a balloon
27. 27.⚙️ Which of these is a lever? (a) a slide (b) a sloping road (c) a tap handle (d) a see-saw
28. 28.True or false: a slide is a wheel and axle. (a) True (b) False
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
32. 32.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 5 cm (d) 40 cm
33. 33.⚖️ 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
34. 34.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a small paper cup (d) an empty thread reel
36. 36.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
37. 37.⚙️ Which of these is a lever? (a) a sloping road (b) a crowbar (c) a ramp (d) a tap handle
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
39. 39.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) down (c) up (d) sideways
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) the lifting height (c) how hard we must pull

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