Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 417 · 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) True (b) False
2. 2.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a sloping road (c) a crowbar (d) a spoon lifting a lid
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.True or false: a well pulley uses a pulley. (a) False (b) True
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.⚖️ 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) the same string
7. 7.⚖️ 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
8. 8.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a crowbar (c) a flagpole (d) a steering wheel
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) a pencil (d) coins as the load
11. 11.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
12. 12.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
13. 13.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚙️ Which simple machine is a doorknob? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
15. 15.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
16. 16.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a mirror (d) an empty thread reel
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) turmeric powder (d) a pencil
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a pencil (c) coins as the load (d) an empty thread reel
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) string (d) a magnet
21. 21.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a crowbar (c) a bottle opener (d) a ramp
22. 22.True or false: a spoon lifting a lid is a lever. (a) True (b) False
23. 23.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
24. 24.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a battery cell (d) a small paper cup
27. 27.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
28. 28.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a sloping road (c) a tap handle (d) a steering wheel
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
30. 30.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 20 cm (d) 10 cm
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a mirror (d) string
32. 32.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
33. 33.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) string (c) a balloon (d) a battery cell
35. 35.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter
36. 36.True or false: a bottle opener is a lever. (a) False (b) True
37. 37.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
38. 38.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
39. 39.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
40. 40.🇮🇳 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

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