Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 447 · 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.True or false: a slide is a wheel and axle. (a) True (b) False
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) how hard we must pull (c) the same string (d) the same cup of coins
3. 3.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
4. 4.🇮🇳 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
5. 5.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
6. 6.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
7. 7.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a sloping road (c) a flagpole (d) a slide
8. 8.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
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.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) yeast (d) string
13. 13.True or false: a tap handle is an inclined plane. (a) True (b) False
14. 14.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
15. 15.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
16. 16.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
17. 17.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
18. 18.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
19. 19.⚖️ 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) number of pulleys (c) the lifting height (d) how hard we must pull
20. 20.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a mirror (c) an empty thread reel (d) a magnet
22. 22.True or false: a well pulley is a lever. (a) False (b) True
23. 23.⚖️ 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 measure it (c) we change it
24. 24.True or false: a steering wheel is an inclined plane. (a) True (b) False
25. 25.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.True or false: a sloping road uses a pulley. (a) True (b) False
28. 28.True or false: a doorknob is a wheel and axle. (a) True (b) False
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) an empty thread reel (d) a mirror
31. 31.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a spoon lifting a lid (c) a sloping road (d) a tap handle
34. 34.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
35. 35.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) turmeric powder (d) a pencil
37. 37.⚖️ 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
38. 38.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it turns blue (c) it gets wet (d) it gets longer
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a battery cell (d) an empty thread reel

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