Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 367 · 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.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
2. 2.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) number of pulleys (c) how hard we must pull
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it is magnetic (d) it could fall on you
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) coins as the load (d) an empty thread reel
6. 6.⚖️ 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
7. 7.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
8. 8.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
9. 9.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
10. 10.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
11. 11.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a sloping road (c) a flagpole (d) a see-saw
12. 12.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
13. 13.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) double (d) about half
14. 14.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a balloon (c) a pencil (d) string
17. 17.True or false: a spoon lifting a lid is a lever. (a) False (b) True
18. 18.⚖️ 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 lifting height (c) how hard we must pull
19. 19.True or false: a flagpole uses a pulley. (a) False (b) True
20. 20.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
21. 21.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
22. 22.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
25. 25.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
26. 26.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
27. 27.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
28. 28.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
29. 29.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a balloon (d) a pencil
30. 30.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a sloping road (c) a tap handle (d) a well pulley
31. 31.⚖️ 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 cup of coins (b) the lifting height (c) the same string (d) number of pulleys
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a mirror (c) a small paper cup (d) a pencil
33. 33.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
34. 34.⚖️ 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) True (b) False
35. 35.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 5 cm (c) 20 cm (d) 40 cm
36. 36.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.⚖️ 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 change it (c) we measure it
39. 39.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a steering wheel (c) a ramp (d) a crowbar
40. 40.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True

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