Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 971 · 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 not needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) string (d) a small paper cup
2. 2.⚖️ 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) True (b) False
3. 3.⚙️ Which of these is a wheel and axle? (a) a crane (b) a steering wheel (c) a spoon lifting a lid (d) a bottle opener
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) an empty thread reel (d) turmeric powder
5. 5.True or false: a well pulley uses a pulley. (a) True (b) False
6. 6.⚙️ Which of these is a lever? (a) a bottle opener (b) a tap handle (c) a flagpole (d) a steering wheel
7. 7.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
8. 8.⚙️ Which of these uses a pulley? (a) a see-saw (b) a bottle opener (c) a slide (d) a flagpole
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a battery cell (d) a small paper cup
10. 10.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same string (c) the lifting height (d) number of pulleys
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a magnet (d) string
14. 14.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
15. 15.True or false: a ramp is a lever. (a) True (b) False
16. 16.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
17. 17.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
18. 18.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
19. 19.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
20. 20.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys (d) the same string
22. 22.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 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 mirror (d) string
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) coins as the load (d) yeast
25. 25.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
26. 26.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
27. 27.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a crowbar (c) a see-saw (d) a tap handle
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) an empty thread reel (d) a small paper cup
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a magnet (d) coins as the load
30. 30.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
31. 31.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
33. 33.True or false: a crane is a lever. (a) True (b) False
34. 34.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) string (c) coins as the load (d) a small paper cup
38. 38.🇮🇳 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
39. 39.⚖️ 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) number of pulleys (c) how hard we must pull
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True

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