Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 84 · 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) coins as the load (c) a mirror (d) a pencil
2. 2.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) water gets lighter (d) the bucket floats
3. 3.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) adds weight (d) halves the weight
4. 4.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a magnet (c) a battery cell (d) a mirror
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) an empty thread reel (c) string (d) a pencil
7. 7.⚙️ Which of these is a lever? (a) a flagpole (b) a see-saw (c) a tap handle (d) a crane
8. 8.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a magnet (d) a pencil
10. 10.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
11. 11.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a battery cell (d) coins as the load
13. 13.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
14. 14.⚙️ Which of these uses a pulley? (a) a ramp (b) a see-saw (c) a crane (d) a doorknob
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
17. 17.⚙️ Which of these is a wheel and axle? (a) a slide (b) a tap handle (c) a sloping road (d) a crowbar
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.⚖️ 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
20. 20.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
21. 21.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
22. 22.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.True or false: a bottle opener uses a pulley. (a) False (b) True
25. 25.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
26. 26.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
27. 27.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
28. 28.True or false: a well pulley uses a pulley. (a) True (b) False
29. 29.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
30. 30.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
31. 31.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
32. 32.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
33. 33.🧺 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) a balloon (d) a pencil
34. 34.True or false: a bottle opener is a wheel and axle. (a) True (b) False
35. 35.⚖️ 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 string (c) number of pulleys (d) the same cup of coins
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the lifting height
38. 38.True or false: a spoon lifting a lid is a lever. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed

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