Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 697 · 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 needed for the thread-reel pulley? (a) string (b) a mirror (c) turmeric powder (d) a magnet
2. 2.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) up (d) in a circle
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull
4. 4.True or false: a crane uses a pulley. (a) False (b) True
5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.True or false: a flagpole uses a pulley. (a) True (b) False
7. 7.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) the same (d) zero
9. 9.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a pencil (c) a battery cell (d) turmeric powder
11. 11.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
12. 12.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
13. 13.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
14. 14.⚙️ Which of these uses a pulley? (a) a tap handle (b) a flagpole (c) a bottle opener (d) a spoon lifting a lid
15. 15.🇮🇳 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
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a magnet (d) coins as the load
17. 17.🛟 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
18. 18.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
19. 19.⚖️ 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
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: a crowbar is a wheel and axle. (a) False (b) True
22. 22.⚖️ 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
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
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 small paper cup is needed for the thread-reel pulley. (a) False (b) True
27. 27.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
28. 28.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
29. 29.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
30. 30.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
33. 33.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
34. 34.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) coins as the load (d) turmeric powder
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a magnet (d) an empty thread reel
36. 36.🧺 Do we need a magnet 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? True or false: the same string is what we measure. (a) True (b) False
38. 38.⚖️ 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) the lifting height (d) number of pulleys
39. 39.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a crowbar (c) a doorknob (d) a flagpole
40. 40.⚙️ Which of these is an inclined plane? (a) a slide (b) a see-saw (c) a crane (d) a crowbar

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