Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 574 · 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 spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
2. 2.True or false: a tap handle is a lever. (a) True (b) False
3. 3.True or false: a crowbar uses a pulley. (a) True (b) False
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 10 cm (c) 20 cm (d) 40 cm
6. 6.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it might sing (d) it could fall on you
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) number of pulleys (c) the same cup of coins
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a mirror (c) string (d) a small paper cup
10. 10.🏗️ 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
11. 11.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) the same (c) zero (d) about half
12. 12.True or false: a well pulley is a wheel and axle. (a) False (b) True
13. 13.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) magnet (c) nail (d) battery
14. 14.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a small paper cup (d) a pencil
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) the same string (b) the lifting height (c) the same cup of coins (d) number of pulleys
16. 16.True or false: a steering wheel is a lever. (a) True (b) False
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a mirror (c) yeast (d) a balloon
18. 18.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) an empty thread reel (d) turmeric powder
19. 19.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
21. 21.True or false: a doorknob is a wheel and axle. (a) False (b) True
22. 22.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
23. 23.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) pulling down is easier (d) the bucket floats
24. 24.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a steering wheel (c) a well pulley (d) a slide
25. 25.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) a magnet (d) a pencil
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) yeast (c) a pencil (d) coins as the load
27. 27.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) on the bench (d) in the tap
28. 28.⚖️ 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
29. 29.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same string (c) number of pulleys (d) the same cup of coins
32. 32.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) turmeric powder (d) a magnet
33. 33.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
34. 34.⚙️ Which of these is an inclined plane? (a) a ramp (b) a crowbar (c) a spoon lifting a lid (d) a crane
35. 35.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
36. 36.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
37. 37.True or false: a slide uses a pulley. (a) False (b) True
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) string (d) a small paper cup
39. 39.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
40. 40.True or false: a spoon lifting a lid is a lever. (a) True (b) False

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