Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 127 · 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 flagpole is an inclined plane. (a) False (b) True
2. 2.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
5. 5.True or false: a well pulley uses a pulley. (a) True (b) False
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (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) the lifting height (b) how hard we must pull (c) number of pulleys
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) yeast (c) a balloon (d) string
9. 9.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
10. 10.True or false: a see-saw is an inclined plane. (a) True (b) False
11. 11.⚙️ Which of these is a lever? (a) a see-saw (b) a ramp (c) a sloping road (d) a crane
12. 12.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a bottle opener (c) a doorknob (d) a see-saw
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
14. 14.⚙️ Which simple machine is a crane? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
15. 15.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a crowbar (c) a see-saw (d) a well pulley
16. 16.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
17. 17.⚙️ Which of these is a lever? (a) a steering wheel (b) a ramp (c) a tap handle (d) a spoon lifting a lid
18. 18.⚖️ 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
19. 19.🇮🇳 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
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) turmeric powder (d) coins as the load
21. 21.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) sideways (d) in a circle
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
24. 24.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) a balloon (d) a small paper cup
27. 27.🧺 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) coins as the load
28. 28.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
31. 31.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
32. 32.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a crowbar (c) a doorknob (d) a flagpole
33. 33.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) double (c) the same (d) about half
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) a balloon (d) a pencil
36. 36.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
37. 37.⚖️ 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) how hard we must pull (c) number of pulleys (d) the same string
38. 38.⚙️ Which of these uses a pulley? (a) a crane (b) a crowbar (c) a ramp (d) a see-saw
39. 39.⚖️ 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 keep it the same (c) we change it
40. 40.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) pulling down is easier (c) the bucket floats (d) the rope gets shorter

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