Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 788 · 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.🏗️ 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
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) turmeric powder
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same cup of coins (c) number of pulleys (d) the same string
4. 4.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
5. 5.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a flagpole (c) a see-saw (d) a tap handle
6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚖️ 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) True (b) False
8. 8.⚖️ 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
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
10. 10.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
12. 12.⚖️ 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
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.True or false: a slide uses a pulley. (a) False (b) True
15. 15.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
17. 17.True or false: a spoon lifting a lid is a lever. (a) False (b) True
18. 18.🛟 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
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) True (b) False
20. 20.True or false: string is needed for the thread-reel pulley. (a) False (b) True
21. 21.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
22. 22.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) string (d) a battery cell
25. 25.⚙️ Which simple machine is a well pulley? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
26. 26.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
27. 27.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
28. 28.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a flagpole (c) a sloping road (d) a crane
29. 29.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
30. 30.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
31. 31.⚙️ Which of these is an inclined plane? (a) a ramp (b) a crowbar (c) a crane (d) a tap handle
32. 32.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
33. 33.⚙️ Which of these uses a pulley? (a) a sloping road (b) a flagpole (c) a steering wheel (d) a spoon lifting a lid
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) an empty thread reel (d) a mirror
35. 35.⚖️ 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) True (b) False
36. 36.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
37. 37.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
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.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False

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