Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 145 · 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? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
3. 3.⚖️ 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
4. 4.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a ramp (c) a bottle opener (d) a crane
5. 5.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a ramp (c) a steering wheel (d) a well pulley
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
7. 7.True or false: a slide uses a pulley. (a) True (b) False
8. 8.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
9. 9.🛟 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
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a mirror (d) yeast
11. 11.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
12. 12.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) coins as the load (d) a pencil
14. 14.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
15. 15.True or false: a crane is an inclined plane. (a) False (b) True
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a pencil (d) coins as the load
18. 18.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a sloping road (c) a crane (d) a steering wheel
20. 20.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
21. 21.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
22. 22.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
23. 23.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) coins as the load (d) a mirror
25. 25.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
26. 26.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) coins as the load (d) an empty thread reel
29. 29.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
30. 30.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a mirror (c) coins as the load (d) a pencil
32. 32.🇮🇳 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
33. 33.⚖️ 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) False (b) True
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) coins as the load (d) a pencil
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a magnet (c) an empty thread reel (d) a small paper cup
36. 36.True or false: a steering wheel is a wheel and axle. (a) True (b) False
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) turmeric powder (c) a balloon (d) yeast
39. 39.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
40. 40.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down

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