Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 873 · 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 needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a balloon (d) coins as the load
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a pencil (d) a mirror
3. 3.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a battery cell (d) a mirror
4. 4.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) down (d) in a circle
5. 5.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a tap handle (c) a ramp (d) a see-saw
6. 6.⚖️ 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) False (b) True
7. 7.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
8. 8.🏗️ 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
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a magnet (d) a pencil
10. 10.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
11. 11.⚙️ Which simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a pencil (d) a balloon
13. 13.True or false: a flagpole is a wheel and axle. (a) False (b) True
14. 14.⚖️ 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
15. 15.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) a small paper cup (d) an empty thread reel
17. 17.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
18. 18.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) string (d) a battery cell
20. 20.True or false: a doorknob is a lever. (a) False (b) True
21. 21.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
22. 22.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.⚖️ 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
25. 25.True or false: a slide is a wheel and axle. (a) True (b) False
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.True or false: a crane is a wheel and axle. (a) True (b) False
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) a mirror (d) a small paper cup
29. 29.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
30. 30.True or false: a well pulley is a lever. (a) False (b) True
31. 31.True or false: a see-saw uses a pulley. (a) True (b) False
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) a pencil (d) coins as the load
34. 34.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
35. 35.⚙️ Which of these is a lever? (a) a steering wheel (b) a spoon lifting a lid (c) a slide (d) a tap handle
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) turmeric powder (c) a small paper cup (d) a pencil
38. 38.⚖️ 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
39. 39.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
40. 40.⚖️ 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) the same string (c) how hard we must pull

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids