Pulley STEM Project Worksheet

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

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