Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 427 · 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 an inclined plane? (a) a bottle opener (b) a sloping road (c) a flagpole (d) a crane
2. 2.⚙️ Which of these uses a pulley? (a) a ramp (b) a crane (c) a steering wheel (d) a doorknob
3. 3.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) yeast (d) a pencil
5. 5.True or false: a crowbar is a wheel and axle. (a) True (b) False
6. 6.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a battery cell (d) string
8. 8.⚙️ Which of these is a lever? (a) a steering wheel (b) a slide (c) a spoon lifting a lid (d) a well pulley
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) an empty thread reel (d) a mirror
10. 10.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it is magnetic (d) it gets hot
11. 11.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a slide (c) a tap handle (d) a well pulley
12. 12.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
15. 15.⚖️ 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 same cup of coins (c) number of pulleys (d) the lifting height
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
17. 17.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
18. 18.True or false: a crane uses a pulley. (a) True (b) False
19. 19.True or false: a well pulley uses a pulley. (a) False (b) True
20. 20.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) an empty thread reel (d) a pencil
22. 22.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
23. 23.⚖️ 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
24. 24.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
25. 25.True or false: a ramp is a wheel and axle. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) a small paper cup (d) string
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a pencil (c) a magnet (d) a battery cell
29. 29.True or false: a flagpole is an inclined plane. (a) True (b) False
30. 30.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
31. 31.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
32. 32.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
33. 33.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) down (d) sideways
34. 34.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
35. 35.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
36. 36.True or false: a tap handle is a wheel and axle. (a) True (b) False
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) coins as the load (d) turmeric powder
38. 38.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) how hard we must pull (c) number of pulleys (d) the lifting height
40. 40.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed

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