Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 433 · 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 of these is a lever? (a) a doorknob (b) a ramp (c) a bottle opener (d) a well pulley
2. 2.⚖️ 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
3. 3.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) in a circle (c) sideways (d) up
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 measure it (b) we keep it the same (c) we change it
5. 5.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
6. 6.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
7. 7.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.⚙️ Which of these is a lever? (a) a crane (b) a well pulley (c) a spoon lifting a lid (d) a doorknob
9. 9.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) impossible (c) easier (d) the same
10. 10.True or false: a tap handle is a wheel and axle. (a) False (b) True
11. 11.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
12. 12.True or false: a doorknob is a wheel and axle. (a) True (b) False
13. 13.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it can hurt your finger (d) it gets wet
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the same string (d) the same cup of coins
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a battery cell (c) a pencil (d) a small paper cup
16. 16.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
17. 17.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it might sing (c) it gets hot (d) it is magnetic
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 measure it (b) we change it (c) we keep it the same
19. 19.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) halves the weight (d) makes it magnetic
20. 20.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
21. 21.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the blackboard (d) on the flagpole
22. 22.True or false: string is needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a mirror (d) a small paper cup
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a balloon (c) a small paper cup (d) string
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
26. 26.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 5 cm (c) 20 cm (d) 10 cm
27. 27.⚙️ Which of these uses a pulley? (a) a flagpole (b) a spoon lifting a lid (c) a bottle opener (d) a ramp
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a mirror (c) an empty thread reel (d) a small paper cup
29. 29.⚖️ 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 string
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a small paper cup (c) a pencil (d) turmeric powder
31. 31.⚖️ 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
32. 32.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
33. 33.⚙️ Which simple machine is a crane? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
34. 34.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚖️ 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) False (b) True
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a small paper cup (c) string (d) an empty thread reel
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) string (c) a pencil (d) a small paper cup
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) coins as the load (d) turmeric powder
39. 39.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) an empty thread reel (d) yeast
40. 40.⚙️ Which of these is an inclined plane? (a) a crane (b) a sloping road (c) a crowbar (d) a spoon lifting a lid

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