Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 731 · 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 simple machine is a crane? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
2. 2.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
3. 3.⚖️ 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
4. 4.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
5. 5.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) an empty thread reel (d) a pencil
7. 7.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
8. 8.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) string (d) a mirror
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) turmeric powder (d) string
10. 10.⚖️ 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) the same cup of coins
11. 11.⚙️ Which of these uses a pulley? (a) a crowbar (b) a spoon lifting a lid (c) a slide (d) a flagpole
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) zero (d) the same
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same string (c) how hard we must pull (d) the same cup of coins
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) a small paper cup (d) string
15. 15.⚖️ 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 change it (c) we measure it
16. 16.True or false: a crowbar is a lever. (a) True (b) False
17. 17.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
18. 18.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
19. 19.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
20. 20.⚖️ 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 same string
21. 21.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
22. 22.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
23. 23.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it gets wet (d) it turns blue
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) yeast (d) string
25. 25.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) the same (d) impossible
26. 26.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
28. 28.🔮 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
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a balloon (c) a magnet (d) a pencil
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) an empty thread reel (c) a balloon (d) a small paper cup
31. 31.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
32. 32.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
33. 33.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
34. 34.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚙️ Which simple machine is a ramp? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
36. 36.🧺 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) string (d) a balloon
37. 37.⚙️ Which of these uses a pulley? (a) a sloping road (b) a crane (c) a crowbar (d) a bottle opener
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a magnet (d) a small paper cup
39. 39.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
40. 40.True or false: a steering wheel is a wheel and axle. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids