Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 172 · 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 not needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) string (d) a small paper cup
2. 2.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
5. 5.⚖️ 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) the same string (c) the same cup of coins (d) number of pulleys
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a magnet (d) a small paper cup
7. 7.⚖️ 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) how hard we must pull (c) the same string (d) the lifting height
8. 8.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
9. 9.⚙️ Which of these is a wheel and axle? (a) a slide (b) a doorknob (c) a bottle opener (d) a flagpole
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) a pencil (d) an empty thread reel
11. 11.⚖️ 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
12. 12.True or false: a tap handle is a wheel and axle. (a) True (b) False
13. 13.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a small paper cup (d) a mirror
17. 17.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
18. 18.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚙️ Which of these is an inclined plane? (a) a crane (b) a doorknob (c) a well pulley (d) a sloping road
24. 24.True or false: a crowbar uses a pulley. (a) True (b) False
25. 25.⚖️ 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
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the flagpole (c) on the bench (d) in the tap
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a battery cell (c) string (d) a pencil
28. 28.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) easier (d) impossible
29. 29.⚙️ Which of these is a lever? (a) a steering wheel (b) a well pulley (c) a bottle opener (d) a flagpole
30. 30.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a balloon (c) a magnet (d) a battery cell
31. 31.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
32. 32.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
33. 33.⚙️ Which simple machine is a ramp? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a small paper cup (d) turmeric powder
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a balloon (d) a pencil
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) string (c) an empty thread reel (d) a pencil
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) turmeric powder (d) an empty thread reel
38. 38.True or false: a ramp uses a pulley. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚖️ 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

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