Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 279 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
2. 2.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
3. 3.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
4. 4.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
5. 5.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a pencil (d) a balloon
8. 8.⚙️ Which of these is a wheel and axle? (a) a crane (b) a well pulley (c) a bottle opener (d) a tap handle
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) how hard we must pull (c) number of pulleys
10. 10.True or false: a slide uses a pulley. (a) True (b) False
11. 11.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
12. 12.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) string (c) a small paper cup (d) a pencil
14. 14.True or false: a steering wheel is an inclined plane. (a) False (b) True
15. 15.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
16. 16.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a flagpole (c) a ramp (d) a doorknob
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a balloon (c) string (d) a small paper cup
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) string
19. 19.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
20. 20.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
21. 21.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) adds weight (d) halves the weight
22. 22.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) the same (d) about half
25. 25.⚙️ Which of these is a lever? (a) a sloping road (b) a crane (c) a ramp (d) a spoon lifting a lid
26. 26.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
27. 27.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
28. 28.🔮 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
29. 29.True or false: a see-saw is a lever. (a) True (b) False
30. 30.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a spoon lifting a lid (c) a steering wheel (d) a ramp
31. 31.True or false: a spoon lifting a lid is a lever. (a) True (b) False
32. 32.True or false: a sloping road is a lever. (a) True (b) False
33. 33.🛟 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
34. 34.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
35. 35.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a battery cell (c) a magnet (d) yeast
37. 37.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a bottle opener (d) a crane
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
39. 39.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a crane (c) a see-saw (d) a slide
40. 40.⚖️ 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 string (b) the same cup of coins (c) the lifting height (d) number of pulleys

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