Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 41 · 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 simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
2. 2.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a tap handle (c) a doorknob (d) a flagpole
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
4. 4.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it is magnetic (d) it might sing
5. 5.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
6. 6.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
7. 7.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a crane (c) a slide (d) a spoon lifting a lid
8. 8.⚙️ Which of these is a lever? (a) a slide (b) a crowbar (c) a well pulley (d) a crane
9. 9.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a battery cell (c) a mirror (d) yeast
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) a mirror
11. 11.⚙️ Which simple machine is a ramp? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) a pencil (d) string
13. 13.⚖️ 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) False (b) True
14. 14.True or false: a slide uses a pulley. (a) False (b) True
15. 15.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
16. 16.⚙️ Which of these is a lever? (a) a slide (b) a steering wheel (c) a doorknob (d) a spoon lifting a lid
17. 17.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a small paper cup (d) a battery cell
19. 19.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) the same (d) impossible
20. 20.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) a magnet (d) a small paper cup
23. 23.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚙️ Which of these is a lever? (a) a crane (b) a sloping road (c) a bottle opener (d) a ramp
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) coins as the load (d) an empty thread reel
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
29. 29.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) turmeric powder (d) an empty thread reel
32. 32.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
33. 33.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
34. 34.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the bench (c) in the tap (d) on the blackboard
35. 35.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
36. 36.⚖️ 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
37. 37.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
38. 38.True or false: a well pulley is an inclined plane. (a) True (b) False
39. 39.True or false: a spoon lifting a lid is a lever. (a) False (b) True
40. 40.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle

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