Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 727 · 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 simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a mirror (d) coins as the load
3. 3.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a pencil (c) a small paper cup (d) an empty thread reel
6. 6.⚖️ 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) number of pulleys (c) how hard we must pull (d) the same string
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) an empty thread reel (d) string
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) about half (d) double
9. 9.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
10. 10.⚖️ 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
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the same string (c) number of pulleys
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.⚙️ Which of these is a lever? (a) a steering wheel (b) a sloping road (c) a spoon lifting a lid (d) a well pulley
14. 14.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a doorknob (c) a flagpole (d) a bottle opener
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) the lifting height (c) number of pulleys (d) the same string
17. 17.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
18. 18.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a magnet (c) a battery cell (d) yeast
20. 20.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
22. 22.True or false: a tap handle is a wheel and axle. (a) True (b) False
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
25. 25.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
26. 26.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
27. 27.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a battery cell (d) a small paper cup
29. 29.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
30. 30.True or false: a ramp is an inclined plane. (a) True (b) False
31. 31.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
34. 34.⚙️ Which of these uses a pulley? (a) a ramp (b) a well pulley (c) a sloping road (d) a slide
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) coins as the load (d) a small paper cup
36. 36.True or false: a crane uses a pulley. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
39. 39.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
40. 40.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True

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