Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 747 · 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 string is kept the same. (a) False (b) True
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) string (d) a magnet
3. 3.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚖️ 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 change it (b) we keep it the same (c) we measure it
5. 5.True or false: a sloping road is an inclined plane. (a) True (b) False
6. 6.🇮🇳 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
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the lifting height (c) how hard we must pull (d) the same string
8. 8.⚙️ Which of these uses a pulley? (a) a doorknob (b) a tap handle (c) a flagpole (d) a sloping road
9. 9.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) yeast (d) a balloon
12. 12.⚖️ 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 keep it the same (c) we measure it
13. 13.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
14. 14.True or false: a ramp is an inclined plane. (a) False (b) True
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.⚙️ Which of these uses a pulley? (a) a slide (b) a see-saw (c) a crane (d) a crowbar
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) yeast (d) string
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) string (d) a magnet
19. 19.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) coins as the load (d) a pencil
22. 22.⚖️ 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) the lifting height (c) how hard we must pull (d) number of pulleys
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) an empty thread reel (d) a mirror
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
25. 25.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
26. 26.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) halves the weight (d) adds weight
27. 27.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
28. 28.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
29. 29.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
30. 30.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
31. 31.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
32. 32.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
33. 33.⚖️ 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) the lifting height (c) number of pulleys
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a pencil (d) a magnet
35. 35.True or false: a flagpole is a wheel and axle. (a) True (b) False
36. 36.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
37. 37.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a steering wheel (c) a slide (d) a crowbar
38. 38.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
39. 39.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a tap handle (c) a crowbar (d) a sloping road
40. 40.⚖️ 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) False (b) True

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