Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 643 · 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.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) turmeric powder (d) coins as the load
3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
4. 4.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same string
6. 6.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a steering wheel (d) a flagpole
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
10. 10.⚙️ Which of these is a lever? (a) a well pulley (b) a ramp (c) a crowbar (d) a slide
11. 11.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
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 keep it the same (b) we measure it (c) we change it
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) a battery cell (d) string
14. 14.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) changes pull direction (d) makes it magnetic
15. 15.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) harder (c) impossible (d) easier
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a magnet (c) an empty thread reel (d) turmeric powder
18. 18.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a magnet (c) coins as the load (d) a small paper cup
20. 20.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same cup of coins
21. 21.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) an empty thread reel (d) turmeric powder
24. 24.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) turmeric powder (c) a battery cell (d) a magnet
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
27. 27.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
30. 30.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
31. 31.⚙️ Which of these is a lever? (a) a steering wheel (b) a slide (c) a well pulley (d) a bottle opener
32. 32.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a magnet (d) string
34. 34.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
35. 35.True or false: a sloping road is an inclined plane. (a) False (b) True
36. 36.True or false: a sloping road uses a pulley. (a) False (b) True
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a mirror (c) string (d) a small paper cup
38. 38.True or false: a well pulley is a lever. (a) True (b) False
39. 39.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
40. 40.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever

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