Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 881 · 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 a lever? (a) a see-saw (b) a doorknob (c) a crane (d) a well pulley
2. 2.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
3. 3.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a spoon lifting a lid (c) a tap handle (d) a crowbar
4. 4.⚙️ Which of these is a lever? (a) a steering wheel (b) a spoon lifting a lid (c) a well pulley (d) a flagpole
5. 5.⚖️ 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
6. 6.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
7. 7.True or false: a doorknob uses a pulley. (a) True (b) False
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a balloon (d) a small paper cup
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
11. 11.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
12. 12.🧺 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) a balloon (d) an empty thread reel
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) yeast (d) coins as the load
14. 14.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
15. 15.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a battery cell (d) a pencil
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) a pencil (d) a magnet
18. 18.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) string (d) a pencil
20. 20.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
21. 21.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
22. 22.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) about half (d) the same
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) an empty thread reel (d) a magnet
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) coins as the load (d) string
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same string (d) the same cup of coins
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a mirror (c) string (d) coins as the load
28. 28.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
29. 29.⚙️ Which of these uses a pulley? (a) a tap handle (b) a well pulley (c) a see-saw (d) a bottle opener
30. 30.True or false: a doorknob is a wheel and axle. (a) False (b) True
31. 31.⚖️ 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 measure it (c) we keep it the same
32. 32.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.⚖️ 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
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys (d) the lifting height
36. 36.True or false: a slide is an inclined plane. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys
39. 39.True or false: a sloping road is a lever. (a) False (b) True
40. 40.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle

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