Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 413 · 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: number of pulleys is what we measure. (a) True (b) False
2. 2.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a crowbar (c) a well pulley (d) a tap handle
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) string
4. 4.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) an empty thread reel (d) a mirror
6. 6.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a battery cell (d) a pencil
8. 8.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a sloping road (c) a tap handle (d) a see-saw
9. 9.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a slide (c) a crowbar (d) a spoon lifting a lid
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) an empty thread reel (d) a pencil
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) zero (c) double (d) about half
13. 13.⚖️ 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
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same string (c) the same cup of coins (d) number of pulleys
15. 15.True or false: a doorknob is a wheel and axle. (a) False (b) True
16. 16.⚙️ Which of these is a lever? (a) a see-saw (b) a slide (c) a flagpole (d) a well pulley
17. 17.⚙️ Which of these uses a pulley? (a) a see-saw (b) a sloping road (c) a spoon lifting a lid (d) a flagpole
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) string (d) a magnet
20. 20.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
21. 21.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the bucket floats (c) pulling down is easier (d) the rope gets shorter
22. 22.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
23. 23.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
24. 24.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a spoon lifting a lid (c) a tap handle (d) a flagpole
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) coins as the load (c) a magnet (d) a mirror
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a mirror (c) a battery cell (d) string
27. 27.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a small paper cup (d) a balloon
29. 29.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) nail (c) battery (d) magnet
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) a pencil (d) string
31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
32. 32.⚖️ 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
33. 33.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
34. 34.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
35. 35.🏗️ 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
36. 36.⚖️ 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
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) number of pulleys (c) the lifting height (d) the same string
38. 38.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed

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