Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 943 · 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: a pencil 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 what we measure? (a) the same string (b) the same cup of coins (c) how hard we must pull (d) the lifting height
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) turmeric powder (c) an empty thread reel (d) a pencil
4. 4.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: a bottle opener is an inclined plane. (a) True (b) False
7. 7.⚖️ 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
8. 8.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
9. 9.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a crane (c) a sloping road (d) a tap handle
10. 10.True or false: a mirror is needed for the thread-reel pulley. (a) True (b) False
11. 11.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) up (c) down (d) sideways
12. 12.⚖️ 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 cup of coins
13. 13.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
14. 14.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the bench (c) on the blackboard (d) on the flagpole
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same string
16. 16.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a steering wheel (c) a tap handle (d) a ramp
17. 17.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
18. 18.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
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 change it (c) we measure it
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) coins as the load (d) a magnet
21. 21.⚙️ Which of these is a lever? (a) a tap handle (b) a flagpole (c) a crane (d) a see-saw
22. 22.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
23. 23.True or false: a flagpole uses a pulley. (a) True (b) False
24. 24.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) the rope gets shorter (c) pulling down is easier (d) water gets lighter
25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) turmeric powder (d) a small paper cup
26. 26.⚙️ Which simple machine is a ramp? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) string (c) a small paper cup (d) an empty thread reel
28. 28.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
29. 29.True or false: a doorknob is a lever. (a) True (b) False
30. 30.⚙️ Which of these uses a pulley? (a) a flagpole (b) a sloping road (c) a bottle opener (d) a doorknob
31. 31.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
32. 32.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) about half (d) zero
34. 34.True or false: a well pulley is an inclined plane. (a) False (b) True
35. 35.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
36. 36.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
37. 37.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a battery cell (d) a small paper cup
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) an empty thread reel (d) a mirror
40. 40.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False

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