Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 434 · 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.⚖️ 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
2. 2.🏗️ 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
3. 3.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a sloping road (c) a bottle opener (d) a well pulley
4. 4.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
5. 5.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a balloon (c) string (d) an empty thread reel
7. 7.⚖️ 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) how hard we must pull (c) the lifting height (d) number of pulleys
8. 8.True or false: a spoon lifting a lid is a lever. (a) False (b) True
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a magnet (d) a small paper cup
10. 10.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a pencil (c) an empty thread reel (d) coins as the load
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a magnet (c) coins as the load (d) a pencil
12. 12.🇮🇳 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
13. 13.⚖️ 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
14. 14.True or false: a doorknob is a wheel and axle. (a) True (b) False
15. 15.True or false: a doorknob is an inclined plane. (a) False (b) True
16. 16.⚖️ 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 same cup of coins
17. 17.⚖️ 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
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) yeast (d) an empty thread reel
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a mirror (c) turmeric powder (d) yeast
22. 22.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
23. 23.🧺 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) string (d) a battery cell
24. 24.⚙️ Which of these is a lever? (a) a doorknob (b) a steering wheel (c) a crowbar (d) a flagpole
25. 25.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a see-saw (d) a tap handle
26. 26.⚙️ Which of these is a lever? (a) a well pulley (b) a ramp (c) a bottle opener (d) a slide
27. 27.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
28. 28.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
29. 29.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
30. 30.🧺 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 small paper cup (d) turmeric powder
31. 31.⚙️ Which of these uses a pulley? (a) a slide (b) a bottle opener (c) a spoon lifting a lid (d) a flagpole
32. 32.⚖️ 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) how hard we must pull (c) the same string
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) a magnet (d) an empty thread reel
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) a mirror
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) string (d) a pencil
38. 38.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a bottle opener (c) a crane (d) a doorknob
39. 39.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
40. 40.⚙️ Which simple machine is a sloping road? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley

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