Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 967 · 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 needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a balloon (d) a magnet
2. 2.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) about half (c) the same (d) double
3. 3.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
4. 4.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) coins as the load (c) string (d) a pencil
6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
7. 7.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
8. 8.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) an empty thread reel (d) a pencil
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) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.⚖️ 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) True (b) False
14. 14.⚙️ Which of these is an inclined plane? (a) a crane (b) a sloping road (c) a spoon lifting a lid (d) a well pulley
15. 15.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
16. 16.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same string (c) how hard we must pull (d) the same cup of coins
18. 18.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.True or false: a slide is an inclined plane. (a) True (b) False
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
22. 22.⚖️ 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) the lifting height (c) number of pulleys
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a balloon (d) string
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
25. 25.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
27. 27.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
28. 28.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
30. 30.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) coins as the load (d) yeast
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) string (c) an empty thread reel (d) coins as the load
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
35. 35.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
39. 39.True or false: a slide uses a pulley. (a) True (b) False
40. 40.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed

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