Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 542 · 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) coins as the load (b) an empty thread reel (c) a small paper cup (d) a magnet
2. 2.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
3. 3.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) coins as the load (d) a balloon
5. 5.⚙️ Which of these is a lever? (a) a sloping road (b) a well pulley (c) a crowbar (d) a slide
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) the same (d) easier
7. 7.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
12. 12.🧺 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) yeast (d) a pencil
13. 13.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) a magnet (d) a pencil
16. 16.True or false: a spoon lifting a lid is a lever. (a) False (b) True
17. 17.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) sideways (d) down
18. 18.⚖️ 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) how hard we must pull (c) the lifting height
19. 19.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a crane (c) a well pulley (d) a sloping road
20. 20.True or false: a see-saw is an inclined plane. (a) True (b) False
21. 21.⚙️ Which of these uses a pulley? (a) a tap handle (b) a slide (c) a crane (d) a see-saw
22. 22.⚖️ 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
23. 23.⚖️ 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 same cup of coins (c) number of pulleys (d) how hard we must pull
24. 24.⚖️ 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) True (b) False
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) an empty thread reel (d) string
26. 26.🛟 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
27. 27.⚖️ 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) how hard we must pull (c) the lifting height (d) the same cup of coins
28. 28.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a slide (c) a ramp (d) a steering wheel
29. 29.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
30. 30.True or false: a steering wheel is a wheel and axle. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a doorknob (c) a crane (d) a ramp
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) an empty thread reel (d) a battery cell
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) yeast (d) a small paper cup
36. 36.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
39. 39.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
40. 40.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 20 cm (d) 5 cm

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