Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 409 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
2. 2.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it gets hot (d) it is magnetic
3. 3.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
4. 4.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
5. 5.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
6. 6.True or false: a slide is an inclined plane. (a) True (b) False
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) False (b) True
8. 8.True or false: a bottle opener uses a pulley. (a) True (b) False
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) yeast (c) an empty thread reel (d) a pencil
10. 10.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
11. 11.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
12. 12.⚖️ 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) how hard we must pull (d) the lifting height
13. 13.⚖️ 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
14. 14.True or false: a magnet is not needed for the thread-reel pulley. (a) True (b) False
15. 15.⚙️ Which of these uses a pulley? (a) a well pulley (b) a steering wheel (c) a doorknob (d) a spoon lifting a lid
16. 16.True or false: a doorknob is a wheel and axle. (a) False (b) True
17. 17.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
18. 18.⚖️ 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) False (b) True
19. 19.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
20. 20.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
21. 21.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) an empty thread reel (d) a small paper cup
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) a balloon (d) string
25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a magnet (d) a small paper cup
26. 26.⚖️ 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) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) yeast (d) string
29. 29.⚙️ Which of these is a lever? (a) a tap handle (b) a steering wheel (c) a crane (d) a bottle opener
30. 30.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a sloping road (c) a ramp (d) a doorknob
31. 31.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
32. 32.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
33. 33.True or false: a crowbar is a lever. (a) True (b) False
34. 34.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
35. 35.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) yeast
37. 37.⚙️ Which of these uses a pulley? (a) a tap handle (b) a steering wheel (c) a flagpole (d) a crowbar
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a mirror (d) an empty thread reel
39. 39.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) on the bench (d) in the tap
40. 40.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a well pulley (c) a sloping road (d) a spoon lifting a lid

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