Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 754 · 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? What do we do with “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
3. 3.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) a balloon
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) turmeric powder (c) a balloon (d) a small paper cup
5. 5.⚖️ 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
6. 6.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
7. 7.⚖️ 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 same string
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ 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 lifting height (c) how hard we must pull (d) number of pulleys
12. 12.⚖️ 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 lifting height (c) number of pulleys
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a battery cell (d) an empty thread reel
15. 15.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a crane (c) a tap handle (d) a ramp
16. 16.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a small paper cup (d) an empty thread reel
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a magnet (c) a pencil (d) an empty thread reel
19. 19.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
20. 20.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
21. 21.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
22. 22.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a well pulley (c) a doorknob (d) a slide
24. 24.⚖️ 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) number of pulleys (c) the same cup of coins
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.⚖️ 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
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
28. 28.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it gets longer (c) it turns blue (d) it can hurt your finger
29. 29.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) up (d) sideways
30. 30.True or false: a bottle opener uses a pulley. (a) False (b) True
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) string
32. 32.True or false: a doorknob is a wheel and axle. (a) True (b) False
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) an empty thread reel (d) a balloon
34. 34.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
35. 35.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) turmeric powder (c) string (d) a pencil
36. 36.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) yeast (c) a balloon (d) string
37. 37.⚖️ 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
38. 38.True or false: a crowbar is a wheel and axle. (a) True (b) False
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a small paper cup (c) a pencil (d) an empty thread reel
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a balloon (d) an empty thread reel

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