Pulley STEM Project Worksheet

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

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