Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 443 · 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 flagpole uses a pulley. (a) True (b) False
2. 2.⚙️ Which simple machine is a flagpole? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) a small paper cup (d) an empty thread reel
4. 4.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
5. 5.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a see-saw (c) a doorknob (d) a flagpole
6. 6.True or false: string is needed for the thread-reel pulley. (a) False (b) True
7. 7.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.⚙️ Which of these is an inclined plane? (a) a slide (b) a well pulley (c) a flagpole (d) a doorknob
10. 10.⚖️ 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
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
12. 12.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (d) it could fall on you
13. 13.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
14. 14.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) adds weight (d) changes pull direction
15. 15.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) the same (d) harder
16. 16.⚖️ 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) how hard we must pull (c) the lifting height (d) number of pulleys
17. 17.⚙️ Which of these is a lever? (a) a ramp (b) a crowbar (c) a slide (d) a doorknob
18. 18.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
19. 19.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
20. 20.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
21. 21.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a magnet (c) a small paper cup (d) string
23. 23.True or false: turmeric powder is needed for the thread-reel pulley. (a) True (b) False
24. 24.⚖️ 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) the same string (c) number of pulleys (d) how hard we must pull
25. 25.⚖️ 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 measure it (c) we keep it the same
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a small paper cup (d) string
27. 27.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a crane (c) a ramp (d) a steering wheel
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
30. 30.True or false: a doorknob is a wheel and axle. (a) False (b) True
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) yeast (c) a mirror (d) turmeric powder
32. 32.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
33. 33.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
34. 34.⚖️ 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) number of pulleys (c) how hard we must pull
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) an empty thread reel (d) a small paper cup
36. 36.⚙️ Which of these is a lever? (a) a see-saw (b) a sloping road (c) a slide (d) a doorknob
37. 37.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a battery cell (d) an empty thread reel
39. 39.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
40. 40.True or false: a crowbar is a lever. (a) False (b) True

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