Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 240 · 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: how hard we must pull is the one thing we change. (a) False (b) True
2. 2.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
3. 3.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
4. 4.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
5. 5.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) string (d) a small paper cup
8. 8.⚙️ Which of these uses a pulley? (a) a sloping road (b) a doorknob (c) a crane (d) a see-saw
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) coins as the load (d) a magnet
10. 10.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
11. 11.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
12. 12.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a magnet (d) a pencil
13. 13.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
14. 14.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a balloon (d) a magnet
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) string (d) a mirror
17. 17.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
18. 18.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
19. 19.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
20. 20.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) magnet (d) nail
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) string (d) a battery cell
25. 25.True or false: a spoon lifting a lid is a lever. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) turmeric powder (d) a pencil
28. 28.⚖️ 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 string (b) number of pulleys (c) the lifting height (d) the same cup of coins
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) on the flagpole (c) on the blackboard (d) in the tap
30. 30.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
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 a small paper cup for the thread-reel pulley? (a) not needed (b) needed
33. 33.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
34. 34.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) the lifting height (c) how hard we must pull (d) number of pulleys
36. 36.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a bottle opener (c) a steering wheel (d) a flagpole
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) coins as the load (c) a small paper cup (d) an empty thread reel
39. 39.⚙️ Which of these is a lever? (a) a ramp (b) a well pulley (c) a crane (d) a see-saw
40. 40.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever

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