Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 899 · 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.True or false: a tap handle is a lever. (a) False (b) True
2. 2.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) a balloon (d) a small paper cup
4. 4.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a ramp (c) a doorknob (d) a see-saw
5. 5.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
6. 6.⚖️ 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
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a balloon (d) an empty thread reel
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
10. 10.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a crowbar (c) a ramp (d) a see-saw
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) string (c) a small paper cup (d) an empty thread reel
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same string (c) number of pulleys (d) the same cup of coins
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) the same (c) harder (d) easier
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a mirror
17. 17.⚙️ Which of these is a lever? (a) a flagpole (b) a crowbar (c) a slide (d) a crane
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
19. 19.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a small paper cup (d) coins as the load
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) turmeric powder (d) a balloon
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) turmeric powder
23. 23.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
24. 24.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
27. 27.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) yeast (d) an empty thread reel
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a magnet (d) coins as the load
30. 30.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
31. 31.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it gets longer (d) it turns blue
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) yeast (c) a balloon (d) turmeric powder
33. 33.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
34. 34.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
35. 35.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
36. 36.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a see-saw (d) a doorknob
37. 37.⚖️ 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) the same cup of coins (c) number of pulleys (d) how hard we must pull
38. 38.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) a small paper cup (c) an empty thread reel (d) a pencil
40. 40.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle

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