Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 978 · 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 tap handle (b) a flagpole (c) a see-saw (d) a slide
2. 2.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
3. 3.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) number of pulleys (d) how hard we must pull
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
6. 6.True or false: a see-saw is a lever. (a) True (b) False
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) string (c) a pencil (d) an empty thread reel
8. 8.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
9. 9.True or false: a spoon lifting a lid is a lever. (a) True (b) False
10. 10.🛟 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
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) False (b) True
14. 14.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
15. 15.🧺 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) a balloon (d) an empty thread reel
16. 16.True or false: a crowbar is a wheel and axle. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we change it
18. 18.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
19. 19.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
20. 20.True or false: a crane uses a pulley. (a) True (b) False
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a pencil (d) a balloon
22. 22.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
23. 23.⚖️ 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 lifting height (c) how hard we must pull
24. 24.⚙️ Which simple machine is a sloping road? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a small paper cup (c) an empty thread reel (d) string
26. 26.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a spoon lifting a lid (c) a crane (d) a see-saw
27. 27.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
28. 28.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
29. 29.True or false: a crane is a lever. (a) True (b) False
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
31. 31.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
33. 33.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
34. 34.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) yeast (d) a small paper cup
36. 36.⚙️ Which of these is an inclined plane? (a) a ramp (b) a well pulley (c) a crowbar (d) a spoon lifting a lid
37. 37.True or false: a crowbar is a lever. (a) True (b) False
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
40. 40.⚙️ Which of these uses a pulley? (a) a well pulley (b) a ramp (c) a steering wheel (d) a sloping road

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