Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 538 · 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.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) string (c) a pencil (d) an empty thread reel
2. 2.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.🛟 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
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) an empty thread reel (d) turmeric powder
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🧺 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) coins as the load (d) a balloon
8. 8.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
9. 9.⚙️ Which simple machine is a crane? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a magnet (c) coins as the load (d) an empty thread reel
11. 11.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
12. 12.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
13. 13.True or false: a sloping road is a wheel and axle. (a) False (b) True
14. 14.⚙️ Which of these is a wheel and axle? (a) a crane (b) a tap handle (c) a sloping road (d) a slide
15. 15.True or false: a tap handle is a lever. (a) True (b) False
16. 16.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) sideways (d) down
17. 17.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
18. 18.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
19. 19.True or false: a bottle opener is a lever. (a) False (b) True
20. 20.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) the rope gets shorter (d) water gets lighter
21. 21.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
22. 22.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: a sloping road uses a pulley. (a) True (b) False
25. 25.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
26. 26.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
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 keep it the same (b) we measure it (c) we change it
30. 30.⚙️ Which of these uses a pulley? (a) a well pulley (b) a sloping road (c) a ramp (d) a slide
31. 31.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
32. 32.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a balloon (d) an empty thread reel
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) number of pulleys (c) the lifting height (d) the same string
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) yeast (c) turmeric powder (d) a balloon
37. 37.⚙️ Which of these is a lever? (a) a slide (b) a bottle opener (c) a well pulley (d) a tap handle
38. 38.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a steering wheel (c) a ramp (d) a crane
39. 39.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
40. 40.⚖️ 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

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