Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 171 · 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) coins as the load (b) an empty thread reel (c) turmeric powder (d) a pencil
2. 2.True or false: string is needed for the thread-reel pulley. (a) True (b) False
3. 3.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ 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) number of pulleys (c) the same cup of coins (d) how hard we must pull
5. 5.⚖️ 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
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) True (b) False
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) coins as the load (d) a battery cell
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
9. 9.⚙️ Which of these uses a pulley? (a) a tap handle (b) a see-saw (c) a doorknob (d) a flagpole
10. 10.True or false: a steering wheel is a wheel and axle. (a) False (b) True
11. 11.⚖️ 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
12. 12.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a see-saw (c) a ramp (d) a doorknob
13. 13.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a battery cell (d) string
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
18. 18.⚙️ Which of these is a lever? (a) a flagpole (b) a crane (c) a crowbar (d) a sloping road
19. 19.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
20. 20.True or false: coins as the load is needed for the thread-reel pulley. (a) False (b) True
21. 21.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a steering wheel (c) a crowbar (d) a sloping road
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) yeast (d) a mirror
23. 23.⚙️ Which of these is a lever? (a) a sloping road (b) a crane (c) a flagpole (d) a see-saw
24. 24.⚙️ Which of these is a lever? (a) a tap handle (b) a spoon lifting a lid (c) a slide (d) a ramp
25. 25.🛟 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
26. 26.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
27. 27.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚖️ 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) True (b) False
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ 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
31. 31.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) coins as the load (d) a balloon
34. 34.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
35. 35.True or false: a tap handle is a lever. (a) False (b) True
36. 36.True or false: a sloping road is an inclined plane. (a) False (b) True
37. 37.🏗️ 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
38. 38.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
39. 39.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
40. 40.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False

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