Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 797 · 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 a lever? (a) a ramp (b) a slide (c) a sloping road (d) a bottle opener
2. 2.⚙️ Which of these uses a pulley? (a) a tap handle (b) a bottle opener (c) a steering wheel (d) a crane
3. 3.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a bottle opener (c) a steering wheel (d) a sloping road
4. 4.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
5. 5.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
6. 6.⚙️ Which of these is a wheel and axle? (a) a crane (b) a see-saw (c) a tap handle (d) a ramp
7. 7.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 5 cm (d) 20 cm
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a magnet (d) coins as the load
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
10. 10.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) turmeric powder (d) coins as the load
12. 12.🧺 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 balloon
13. 13.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
14. 14.⚖️ 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) how hard we must pull (c) the lifting height (d) the same string
15. 15.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚖️ 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 lifting height (c) the same string (d) how hard we must pull
17. 17.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
18. 18.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
19. 19.⚖️ 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
20. 20.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a balloon (d) an empty thread reel
23. 23.True or false: a bottle opener is a wheel and axle. (a) False (b) True
24. 24.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
25. 25.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
27. 27.True or false: a tap handle is a wheel and axle. (a) True (b) False
28. 28.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
29. 29.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) water gets lighter (d) the bucket floats
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) coins as the load (d) a mirror
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a battery cell (d) coins as the load
32. 32.True or false: string is needed for the thread-reel pulley. (a) True (b) False
33. 33.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
34. 34.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
35. 35.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a well pulley (c) a ramp (d) a tap handle
36. 36.⚙️ Which of these is a lever? (a) a flagpole (b) a see-saw (c) a well pulley (d) a steering wheel
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
38. 38.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
39. 39.⚖️ 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
40. 40.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down

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