Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 716 · 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 simple machine is a crane? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
2. 2.⚖️ 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
3. 3.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
4. 4.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
5. 5.True or false: a sloping road is a lever. (a) False (b) True
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) coins as the load (c) a small paper cup (d) an empty thread reel
7. 7.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
8. 8.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) coins as the load (d) a pencil
11. 11.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
12. 12.⚙️ Which simple machine is a tap handle? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
13. 13.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚙️ Which simple machine is a doorknob? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a battery cell (d) string
17. 17.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the flagpole (d) on the bench
18. 18.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
20. 20.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a tap handle (c) a bottle opener (d) a crowbar
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a small paper cup (d) an empty thread reel
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) turmeric powder
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
25. 25.⚖️ 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) False (b) True
26. 26.True or false: a ramp is a lever. (a) True (b) False
27. 27.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
28. 28.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a ramp (c) a doorknob (d) a sloping road
29. 29.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
30. 30.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
31. 31.⚙️ Which of these is a lever? (a) a well pulley (b) a steering wheel (c) a bottle opener (d) a crane
32. 32.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
34. 34.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) halves the weight (d) adds weight
35. 35.True or false: string is needed for the thread-reel pulley. (a) False (b) True
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
39. 39.🛟 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
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) yeast (d) coins as the load

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