Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 354 · 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 needed for the thread-reel pulley? (a) a magnet (b) string (c) a battery cell (d) turmeric powder
2. 2.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
3. 3.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) water gets lighter (c) the rope gets shorter (d) the bucket floats
4. 4.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
5. 5.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) a small paper cup (d) coins as the load
7. 7.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a well pulley (c) a ramp (d) a steering wheel
8. 8.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
9. 9.⚙️ Which of these is a wheel and axle? (a) a slide (b) a doorknob (c) a ramp (d) a spoon lifting a lid
10. 10.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
11. 11.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a spoon lifting a lid (c) a slide (d) a doorknob
12. 12.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) halves the weight (d) adds weight
13. 13.⚙️ Which of these uses a pulley? (a) a doorknob (b) a spoon lifting a lid (c) a well pulley (d) a crowbar
14. 14.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) turmeric powder (d) an empty thread reel
16. 16.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
17. 17.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull (d) the lifting height
18. 18.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
19. 19.⚙️ Which of these uses a pulley? (a) a sloping road (b) a tap handle (c) a flagpole (d) a bottle opener
20. 20.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
21. 21.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a small paper cup (d) a balloon
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) coins as the load (c) yeast (d) turmeric powder
24. 24.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
25. 25.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
26. 26.⚙️ Which of these uses a pulley? (a) a slide (b) a crane (c) a bottle opener (d) a see-saw
27. 27.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the lifting height (c) number of pulleys (d) the same cup of coins
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) yeast (c) a pencil (d) string
31. 31.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
32. 32.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
33. 33.True or false: a crane is an inclined plane. (a) False (b) True
34. 34.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
35. 35.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
36. 36.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
37. 37.⚙️ Which of these is a lever? (a) a see-saw (b) a sloping road (c) a well pulley (d) a crane
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a small paper cup (d) a magnet

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