Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 276 · 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 uses a pulley? (a) a see-saw (b) a ramp (c) a tap handle (d) a well pulley
2. 2.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ 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) number of pulleys (c) the lifting height
5. 5.⚙️ Which of these is a lever? (a) a ramp (b) a spoon lifting a lid (c) a doorknob (d) a sloping road
6. 6.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) double (d) zero
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) coins as the load (c) a pencil (d) string
8. 8.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
9. 9.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
10. 10.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) battery (d) nail
11. 11.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) the rope gets shorter (d) pulling down is easier
12. 12.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
14. 14.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
15. 15.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
16. 16.⚖️ 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
17. 17.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) coins as the load (d) yeast
19. 19.True or false: a bottle opener is a lever. (a) False (b) True
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
22. 22.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
23. 23.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a tap handle (c) a steering wheel (d) a slide
24. 24.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
25. 25.True or false: string is needed for the thread-reel pulley. (a) True (b) False
26. 26.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
27. 27.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
28. 28.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
29. 29.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
30. 30.⚙️ Which simple machine is a flagpole? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
31. 31.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) an empty thread reel (d) a small paper cup
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) string (d) coins as the load
34. 34.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a flagpole (c) a bottle opener (d) a steering wheel
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) string (d) a battery cell
37. 37.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) makes it magnetic (d) changes pull direction
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a mirror (c) coins as the load (d) a pencil
39. 39.⚖️ 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) number of pulleys (c) the same string (d) the same cup of coins
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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