Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 426 · 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.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) rope (d) nail
2. 2.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
3. 3.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
4. 4.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a pencil (c) a mirror (d) a balloon
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
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) True (b) False
8. 8.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) a magnet (d) a pencil
10. 10.⚖️ 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) the same string (c) how hard we must pull
11. 11.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
12. 12.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
13. 13.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
15. 15.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
16. 16.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) yeast (d) an empty thread reel
18. 18.⚙️ Which of these is a lever? (a) a bottle opener (b) a sloping road (c) a ramp (d) a crane
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the same string (c) the lifting height (d) number of pulleys
20. 20.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
21. 21.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.True or false: a crane is a lever. (a) False (b) True
24. 24.True or false: a ramp is an inclined plane. (a) False (b) True
25. 25.🧺 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) string
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
27. 27.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) down (d) in a circle
28. 28.⚙️ Which of these is a wheel and axle? (a) a slide (b) a steering wheel (c) a sloping road (d) a flagpole
29. 29.🧺 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 battery cell (d) an empty thread reel
30. 30.⚖️ 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) number of pulleys (c) the same cup of coins (d) the lifting height
31. 31.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a sloping road (c) a doorknob (d) a slide
32. 32.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
33. 33.🧺 Do we need an empty thread reel 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? True or false: number of pulleys is kept the same. (a) False (b) True
35. 35.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
36. 36.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) a small paper cup (d) turmeric powder
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a mirror (d) an empty thread reel
40. 40.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle

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