Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 920 · 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.⚖️ 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
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) an empty thread reel (c) a small paper cup (d) a pencil
5. 5.⚙️ Which simple machine is a well pulley? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) a small paper cup (d) a balloon
7. 7.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) in a circle (d) up
8. 8.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
9. 9.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
10. 10.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a battery cell (d) an empty thread reel
13. 13.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it gets hot (d) it might sing
14. 14.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a spoon lifting a lid (c) a ramp (d) a flagpole
15. 15.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
16. 16.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) yeast (d) a magnet
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) yeast (c) a small paper cup (d) coins as the load
19. 19.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
20. 20.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
21. 21.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
22. 22.⚙️ Which of these uses a pulley? (a) a crane (b) a see-saw (c) a spoon lifting a lid (d) a steering wheel
23. 23.True or false: a see-saw is an inclined plane. (a) True (b) False
24. 24.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
25. 25.⚖️ 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
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 measure it (b) we keep it the same (c) we change it
27. 27.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
28. 28.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the flagpole (d) on the bench
29. 29.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a tap handle (c) a bottle opener (d) a flagpole
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) the same cup of coins (c) the same string (d) how hard we must pull
31. 31.True or false: a see-saw is a wheel and axle. (a) True (b) False
32. 32.True or false: a tap handle is an inclined plane. (a) False (b) True
33. 33.🧺 Do we need a mirror 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: the lifting height is kept the same. (a) True (b) False
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) a small paper cup (c) coins as the load (d) an empty thread reel
36. 36.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a ramp (c) a doorknob (d) a crowbar
37. 37.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) about half (d) zero
38. 38.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
39. 39.⚙️ Which of these is a lever? (a) a see-saw (b) a slide (c) a doorknob (d) a steering wheel
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) yeast (d) a pencil

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