Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 287 · 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? Which of these is the one thing we change? (a) the same string (b) the lifting height (c) how hard we must pull (d) number of pulleys
2. 2.⚖️ 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
3. 3.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) string (d) a balloon
7. 7.True or false: a doorknob is a wheel and axle. (a) True (b) False
8. 8.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
9. 9.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crowbar (c) a sloping road (d) a crane
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a pencil (c) a small paper cup (d) an empty thread reel
12. 12.True or false: a crane uses a pulley. (a) True (b) False
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) an empty thread reel (d) string
14. 14.⚙️ Which of these is a lever? (a) a well pulley (b) a steering wheel (c) a crowbar (d) a slide
15. 15.⚙️ Which simple machine is a sloping road? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
16. 16.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a small paper cup (c) an empty thread reel (d) string
20. 20.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
21. 21.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) magnet (d) battery
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) coins as the load (c) a battery cell (d) a small paper cup
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a balloon (d) an empty thread reel
24. 24.True or false: a sloping road uses a pulley. (a) True (b) False
25. 25.⚖️ 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) the same string (c) how hard we must pull (d) number of pulleys
26. 26.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
27. 27.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) an empty thread reel (d) a pencil
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a mirror (d) a pencil
31. 31.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it could fall on you (c) it is magnetic (d) it gets hot
32. 32.⚙️ Which of these uses a pulley? (a) a doorknob (b) a steering wheel (c) a slide (d) a flagpole
33. 33.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.True or false: a see-saw is a wheel and axle. (a) True (b) False
36. 36.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
37. 37.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
38. 38.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
39. 39.True or false: a steering wheel is a wheel and axle. (a) False (b) True
40. 40.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a slide (c) a ramp (d) a doorknob

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