Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 687 · 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.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
2. 2.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 10 cm (d) 20 cm
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) turmeric powder (d) string
5. 5.⚖️ 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
6. 6.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
7. 7.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
8. 8.⚖️ 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 same string (c) how hard we must pull (d) number of pulleys
9. 9.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
10. 10.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a pencil (d) a magnet
12. 12.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
15. 15.⚙️ Which of these uses a pulley? (a) a tap handle (b) a steering wheel (c) a well pulley (d) a see-saw
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a battery cell (c) a mirror (d) string
17. 17.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a mirror (c) an empty thread reel (d) a small paper cup
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) False (b) True
20. 20.⚙️ Which simple machine is a crowbar? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) a small paper cup (c) a pencil (d) coins as the load
22. 22.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a steering wheel (c) a sloping road (d) a bottle opener
23. 23.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a small paper cup (d) coins as the load
25. 25.True or false: a ramp is an inclined plane. (a) True (b) False
26. 26.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
28. 28.⚙️ Which of these is an inclined plane? (a) a slide (b) a doorknob (c) a crowbar (d) a see-saw
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) coins as the load (d) an empty thread reel
30. 30.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
31. 31.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a crane (c) a slide (d) a steering wheel
32. 32.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a bottle opener (c) a flagpole (d) a ramp
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
35. 35.True or false: a slide is an inclined plane. (a) False (b) True
36. 36.⚖️ 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 lifting height (c) how hard we must pull (d) the same cup of coins
37. 37.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a battery cell (d) an empty thread reel
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) a balloon (d) turmeric powder
39. 39.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
40. 40.⚙️ Which of these is a lever? (a) a slide (b) a well pulley (c) a bottle opener (d) a sloping road

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