Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 880 · 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.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
2. 2.True or false: string is needed for the thread-reel pulley. (a) False (b) True
3. 3.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) a battery cell (d) coins as the load
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a battery cell (d) a balloon
6. 6.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) magnet (d) battery
7. 7.⚖️ 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
8. 8.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a pencil (d) a magnet
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) yeast (d) a balloon
12. 12.⚖️ 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
13. 13.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) the lifting height (d) how hard we must pull
15. 15.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
16. 16.⚙️ Which of these uses a pulley? (a) a see-saw (b) a crane (c) a tap handle (d) a spoon lifting a lid
17. 17.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
18. 18.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
19. 19.🏗️ 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
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
21. 21.True or false: a crowbar is a wheel and axle. (a) True (b) False
22. 22.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
23. 23.True or false: a steering wheel is a wheel and axle. (a) True (b) False
24. 24.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
25. 25.🛟 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
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) turmeric powder (c) an empty thread reel (d) a small paper cup
27. 27.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
28. 28.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
29. 29.True or false: a bottle opener is an inclined plane. (a) True (b) False
30. 30.⚙️ Which simple machine is a bottle opener? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) how hard we must pull (c) number of pulleys (d) the same string
32. 32.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a tap handle (c) a bottle opener (d) a steering wheel
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
34. 34.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a crane (c) a see-saw (d) a slide
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a battery cell (d) an empty thread reel
36. 36.True or false: a doorknob is an inclined plane. (a) True (b) False
37. 37.True or false: a bottle opener uses a pulley. (a) True (b) False
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.⚙️ Which of these uses a pulley? (a) a crowbar (b) a see-saw (c) a flagpole (d) a doorknob
40. 40.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed

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