Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 266 · 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.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a steering wheel (c) a slide (d) a bottle opener
2. 2.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
4. 4.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
5. 5.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) zero (d) the same
7. 7.⚙️ Which of these uses a pulley? (a) a ramp (b) a steering wheel (c) a crowbar (d) a well pulley
8. 8.True or false: a mirror is not 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 “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
11. 11.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
12. 12.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) yeast (d) turmeric powder
14. 14.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a well pulley (d) a see-saw
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
16. 16.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a pencil (d) turmeric powder
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) coins as the load (d) an empty thread reel
19. 19.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
20. 20.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) impossible (c) harder (d) the same
21. 21.⚙️ Which of these is a lever? (a) a steering wheel (b) a well pulley (c) a crowbar (d) a doorknob
22. 22.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a pencil (d) turmeric powder
24. 24.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) yeast (d) a magnet
26. 26.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
28. 28.True or false: a steering wheel is a lever. (a) True (b) False
29. 29.⚖️ 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
30. 30.True or false: a flagpole uses a pulley. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) an empty thread reel (d) a battery cell
34. 34.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
35. 35.⚙️ Which simple machine is a sloping road? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
36. 36.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
37. 37.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
38. 38.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) string (c) a mirror (d) turmeric powder

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