Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 783 · 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) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
2. 2.⚙️ Which of these uses a pulley? (a) a flagpole (b) a tap handle (c) a bottle opener (d) a steering wheel
3. 3.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a bottle opener (c) a sloping road (d) a tap handle
4. 4.True or false: a steering wheel uses a pulley. (a) False (b) True
5. 5.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a see-saw (c) a tap handle (d) a ramp
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
8. 8.True or false: a ramp is an inclined plane. (a) True (b) False
9. 9.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
10. 10.True or false: a spoon lifting a lid is a lever. (a) True (b) False
11. 11.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
12. 12.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
13. 13.🧺 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) a mirror (d) coins as the load
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a pencil (d) a mirror
15. 15.⚖️ 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
16. 16.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
17. 17.⚙️ Which simple machine is a slide? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
18. 18.⚖️ 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 cup of coins (c) number of pulleys (d) how hard we must pull
19. 19.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
20. 20.True or false: a well pulley is a wheel and axle. (a) True (b) False
21. 21.⚖️ 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) False (b) True
22. 22.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
23. 23.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
27. 27.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
28. 28.⚖️ 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) True (b) False
29. 29.True or false: a sloping road is an inclined plane. (a) True (b) False
30. 30.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) string (d) an empty thread reel
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) battery (d) rope
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) zero (c) double (d) the same
34. 34.True or false: a steering wheel is a wheel and axle. (a) False (b) True
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) an empty thread reel (c) a battery cell (d) a magnet
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) a pencil (d) string
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) coins as the load (d) a magnet
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) string (d) yeast
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a balloon (d) coins as the load
40. 40.⚖️ 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) False (b) True

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