Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 865 · 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 not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) coins as the load (d) a pencil
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a pencil (d) a battery cell
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) coins as the load (c) a pencil (d) string
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a small paper cup (d) a mirror
6. 6.True or false: string is 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 the one thing we change? (a) the same string (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) a small paper cup (d) string
10. 10.⚖️ 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
11. 11.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
12. 12.⚙️ Which simple machine is a sloping road? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) yeast (d) string
14. 14.⚖️ 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
15. 15.True or false: a spoon lifting a lid is a lever. (a) True (b) False
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) a pencil (c) coins as the load (d) an empty thread reel
17. 17.⚖️ 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) the same string (c) the lifting height (d) number of pulleys
18. 18.⚙️ Which of these is a lever? (a) a tap handle (b) a well pulley (c) a ramp (d) a spoon lifting a lid
19. 19.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a tap handle (c) a crowbar (d) a ramp
20. 20.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) battery (d) magnet
21. 21.⚙️ Which of these is a lever? (a) a ramp (b) a steering wheel (c) a crowbar (d) a flagpole
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) an empty thread reel (d) a balloon
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a pencil (d) a magnet
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) string (d) turmeric powder
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 measure it (b) we keep it the same (c) we change it
27. 27.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
28. 28.🛟 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
29. 29.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
30. 30.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
31. 31.True or false: a doorknob is an inclined plane. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a balloon (d) an empty thread reel
34. 34.⚙️ Which of these is an inclined plane? (a) a crane (b) a sloping road (c) a crowbar (d) a spoon lifting a lid
35. 35.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
36. 36.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) halves the weight (c) adds weight (d) changes pull direction
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the bucket floats (c) the rope gets shorter (d) water gets lighter
38. 38.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a mirror (d) a small paper cup
40. 40.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a battery cell (d) string

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