Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 318 · 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.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 20 cm (d) 5 cm
2. 2.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
3. 3.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a sloping road (c) a well pulley (d) a doorknob
4. 4.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
5. 5.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
6. 6.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) turmeric powder (d) string
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
11. 11.⚖️ 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 string (b) number of pulleys (c) the same cup of coins (d) the lifting height
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) a battery cell (d) a magnet
13. 13.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a see-saw (c) a crane (d) a ramp
14. 14.⚖️ 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
15. 15.True or false: a ramp is an inclined plane. (a) False (b) True
16. 16.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.⚖️ 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) the same string (c) how hard we must pull (d) number of pulleys
20. 20.⚖️ 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) the same string (c) number of pulleys
21. 21.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
22. 22.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
23. 23.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
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 measure it (b) we keep it the same (c) we change it
25. 25.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a well pulley (c) a flagpole (d) a spoon lifting a lid
27. 27.⚖️ 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
28. 28.⚙️ Which of these is a lever? (a) a tap handle (b) a bottle opener (c) a steering wheel (d) a well pulley
29. 29.⚙️ Which of these uses a pulley? (a) a crane (b) a steering wheel (c) a spoon lifting a lid (d) a crowbar
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) yeast (c) a small paper cup (d) coins as the load
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) coins as the load (c) a small paper cup (d) an empty thread reel
32. 32.🧺 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 pencil (d) coins as the load
33. 33.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the flagpole (c) on the blackboard (d) on the bench
34. 34.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
35. 35.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
36. 36.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
37. 37.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
38. 38.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) an empty thread reel (c) string (d) a small paper cup
40. 40.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False

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