Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 69 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) a small paper cup (d) string
2. 2.True or false: a slide is a lever. (a) False (b) True
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) turmeric powder (c) a mirror (d) a balloon
5. 5.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
6. 6.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
8. 8.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down
9. 9.⚖️ 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
10. 10.🛟 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
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) an empty thread reel (d) a balloon
13. 13.🧺 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) a pencil (d) turmeric powder
14. 14.True or false: a well pulley uses a pulley. (a) False (b) True
15. 15.⚙️ Which of these uses a pulley? (a) a slide (b) a well pulley (c) a ramp (d) a see-saw
16. 16.⚖️ 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
17. 17.🛟 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
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
19. 19.⚙️ Which simple machine is a slide? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
20. 20.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a doorknob (c) a spoon lifting a lid (d) a slide
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a balloon (c) turmeric powder (d) coins as the load
23. 23.True or false: a sloping road is an inclined plane. (a) False (b) True
24. 24.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
25. 25.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
26. 26.⚖️ 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) the same cup of coins (c) how hard we must pull (d) the lifting height
27. 27.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
28. 28.⚙️ Which of these is a lever? (a) a see-saw (b) a steering wheel (c) a crane (d) a flagpole
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) string (c) coins as the load (d) a small paper cup
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) string (c) a pencil (d) coins as the load
31. 31.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
32. 32.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
33. 33.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
34. 34.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
35. 35.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
36. 36.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a well pulley (c) a doorknob (d) a spoon lifting a lid
37. 37.True or false: a spoon lifting a lid is a lever. (a) True (b) False
38. 38.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the lifting height
39. 39.True or false: a well pulley is a lever. (a) True (b) False
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) a battery cell (d) turmeric powder

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