Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 505 · 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.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) water gets lighter (d) the rope gets shorter
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) how hard we must pull (c) the same cup of coins (d) the same string
3. 3.⚖️ 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 lifting height
4. 4.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
5. 5.🛟 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
6. 6.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) an empty thread reel (d) a magnet
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a balloon (c) a small paper cup (d) a pencil
9. 9.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) in a circle (d) up
10. 10.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
11. 11.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a battery cell (c) an empty thread reel (d) a small paper cup
13. 13.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) makes it magnetic (d) adds weight
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a small paper cup (c) a magnet (d) turmeric powder
15. 15.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
16. 16.True or false: a see-saw is a wheel and axle. (a) True (b) False
17. 17.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) double (c) zero (d) the same
18. 18.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚙️ Which of these is a lever? (a) a well pulley (b) a slide (c) a ramp (d) a crowbar
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) a small paper cup (d) an empty thread reel
21. 21.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) an empty thread reel (d) a mirror
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
24. 24.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
25. 25.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a see-saw (c) a crane (d) a ramp
26. 26.True or false: a flagpole is an inclined plane. (a) True (b) False
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins (d) the same string
28. 28.⚙️ Which of these uses a pulley? (a) a crowbar (b) a spoon lifting a lid (c) a doorknob (d) a crane
29. 29.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a pencil (c) a battery cell (d) turmeric powder
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) an empty thread reel (c) a pencil (d) string
32. 32.⚙️ Which simple machine is a flagpole? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
33. 33.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) rope (d) magnet
34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
35. 35.True or false: a bottle opener is an inclined plane. (a) True (b) False
36. 36.True or false: string is needed for the thread-reel pulley. (a) False (b) True
37. 37.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) turmeric powder (d) an empty thread reel
39. 39.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a well pulley (d) a ramp
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) coins as the load (d) a magnet

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