Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 261 · 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.True or false: a well pulley is a wheel and axle. (a) True (b) False
2. 2.True or false: a ramp uses a pulley. (a) True (b) False
3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 10 cm (c) 20 cm (d) 5 cm
4. 4.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a slide (c) a spoon lifting a lid (d) a crowbar
5. 5.⚖️ 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 cup of coins (d) the same string
6. 6.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
8. 8.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
9. 9.🧺 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) an empty thread reel (d) string
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.True or false: a crowbar is a wheel and axle. (a) False (b) True
12. 12.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
13. 13.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
14. 14.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
15. 15.⚖️ 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
16. 16.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) in the tap (c) on the flagpole (d) on the bench
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) an empty thread reel (d) yeast
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a small paper cup (d) turmeric powder
19. 19.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a mirror (d) an empty thread reel
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) a pencil (d) a small paper cup
22. 22.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
23. 23.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
24. 24.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
25. 25.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
26. 26.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
27. 27.⚙️ Which of these uses a pulley? (a) a slide (b) a crowbar (c) a doorknob (d) a flagpole
28. 28.⚖️ 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) how hard we must pull (d) the same string
29. 29.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
30. 30.True or false: a steering wheel is a wheel and axle. (a) False (b) True
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it could fall on you (d) it gets hot
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) coins as the load (d) a mirror
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) string (d) an empty thread reel
35. 35.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
36. 36.True or false: a doorknob is a wheel and axle. (a) False (b) True
37. 37.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
39. 39.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) a battery cell (d) an empty thread reel

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