Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 676 · 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.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
2. 2.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) an empty thread reel (c) a mirror (d) a battery cell
3. 3.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) number of pulleys (c) how hard we must pull (d) the same cup of coins
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is what we measure. (a) True (b) False
5. 5.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
6. 6.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
7. 7.True or false: a battery cell is needed for the thread-reel pulley. (a) False (b) True
8. 8.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) zero (d) the same
9. 9.True or false: a steering wheel uses a pulley. (a) True (b) False
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) string (d) a balloon
11. 11.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
12. 12.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
13. 13.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
14. 14.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
15. 15.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) an empty thread reel (c) a magnet (d) a pencil
17. 17.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a see-saw (c) a crane (d) a doorknob
18. 18.⚖️ 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
19. 19.🏗️ 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
20. 20.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) coins as the load (c) a small paper cup (d) a pencil
22. 22.⚖️ 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 cup of coins (c) the lifting height (d) the same string
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a magnet
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) coins as the load (d) an empty thread reel
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🛟 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
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a small paper cup (d) turmeric powder
29. 29.True or false: a ramp is a lever. (a) False (b) True
30. 30.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
31. 31.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) string (c) a battery cell (d) an empty thread reel
32. 32.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
34. 34.True or false: a flagpole uses a pulley. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
36. 36.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a tap handle (c) a crane (d) a bottle opener
37. 37.🇮🇳 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
38. 38.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a small paper cup (d) a mirror
40. 40.True or false: a see-saw is a wheel and axle. (a) True (b) False

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