Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 192 · 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 small paper cup (b) a pencil (c) a magnet (d) an empty thread reel
2. 2.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
3. 3.True or false: string is needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) turmeric powder (d) coins as the load
5. 5.⚖️ 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
6. 6.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) string (d) a magnet
9. 9.⚙️ Which of these is a lever? (a) a flagpole (b) a tap handle (c) a crowbar (d) a ramp
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) coins as the load (d) a mirror
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a mirror (d) an empty thread reel
12. 12.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
13. 13.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
14. 14.True or false: a spoon lifting a lid is a lever. (a) True (b) False
15. 15.⚖️ 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) False (b) True
16. 16.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
17. 17.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
18. 18.True or false: a bottle opener is a lever. (a) True (b) False
19. 19.⚙️ Which of these is a lever? (a) a doorknob (b) a bottle opener (c) a steering wheel (d) a tap handle
20. 20.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a crane (c) a doorknob (d) a slide
21. 21.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
22. 22.True or false: a tap handle is an inclined plane. (a) True (b) False
23. 23.True or false: a sloping road is an inclined plane. (a) True (b) False
24. 24.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a pencil (d) turmeric powder
26. 26.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a small paper cup (d) yeast
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) a battery cell (d) a mirror
29. 29.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a bottle opener (c) a spoon lifting a lid (d) a ramp
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) a pencil (d) a small paper cup
31. 31.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
32. 32.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
33. 33.⚖️ 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) False (b) True
34. 34.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a see-saw (c) a bottle opener (d) a steering wheel
35. 35.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same string
37. 37.⚖️ 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
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.⚖️ 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
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False

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