Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 693 · 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.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
2. 2.True or false: a well pulley is a wheel and axle. (a) False (b) True
3. 3.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a doorknob (c) a crane (d) a spoon lifting a lid
4. 4.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
5. 5.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) a small paper cup (d) a pencil
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a balloon (c) an empty thread reel (d) string
8. 8.True or false: a tap handle is a lever. (a) False (b) True
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) turmeric powder (d) an empty thread reel
10. 10.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a ramp (d) a bottle opener
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
12. 12.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
13. 13.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) False (b) True
15. 15.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
16. 16.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
17. 17.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
20. 20.⚙️ Which of these is a lever? (a) a flagpole (b) a doorknob (c) a see-saw (d) a well pulley
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) turmeric powder (d) an empty thread reel
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) yeast (d) an empty thread reel
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a magnet
24. 24.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
25. 25.⚖️ 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) number of pulleys (c) the same string (d) how hard we must pull
26. 26.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.⚙️ Which of these is a lever? (a) a crowbar (b) a flagpole (c) a well pulley (d) a slide
29. 29.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
30. 30.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
31. 31.⚙️ Which simple machine is a well pulley? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
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.⚙️ Which simple machine is a crane? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
34. 34.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
35. 35.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a battery cell (d) a small paper cup
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a balloon (d) a magnet
40. 40.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True

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