Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 890 · 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.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
2. 2.⚙️ Which of these is a lever? (a) a tap handle (b) a flagpole (c) a crane (d) a spoon lifting a lid
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 same cup of coins
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.True or false: a bottle opener is a lever. (a) False (b) True
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) an empty thread reel (d) a magnet
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
9. 9.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
10. 10.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) turmeric powder (d) a small paper cup
11. 11.True or false: yeast is needed for the thread-reel pulley. (a) True (b) False
12. 12.True or false: a well pulley uses a pulley. (a) True (b) False
13. 13.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
14. 14.🛟 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
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a magnet (d) coins as the load
16. 16.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a crane (c) a well pulley (d) a tap handle
17. 17.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) yeast (d) an empty thread reel
19. 19.⚖️ 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
20. 20.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a balloon (d) an empty thread reel
22. 22.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
23. 23.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
26. 26.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) up (d) in a circle
27. 27.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a battery cell (c) coins as the load (d) an empty thread reel
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) how hard we must pull (c) number of pulleys (d) the same string
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the lifting height (c) the same string (d) number of pulleys
31. 31.True or false: a see-saw is a lever. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
34. 34.🧺 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) a battery cell (d) a pencil
35. 35.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
36. 36.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
37. 37.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
38. 38.True or false: a ramp is an inclined plane. (a) True (b) False
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) string (d) a small paper cup
40. 40.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a steering wheel (c) a ramp (d) a bottle opener

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