Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 891 · 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 ramp is a lever. (a) True (b) False
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) a small paper cup (c) string (d) an empty thread reel
3. 3.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
4. 4.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) a mirror (b) a small paper cup (c) coins as the load (d) an empty thread reel
6. 6.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (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 what we measure? (a) number of pulleys (b) the lifting height (c) the same string (d) how hard we must pull
8. 8.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
9. 9.⚖️ 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
10. 10.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a see-saw (c) a spoon lifting a lid (d) a ramp
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) a pencil (d) turmeric powder
12. 12.⚖️ 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
13. 13.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) pulling down is easier (d) the rope gets shorter
14. 14.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which of these is a lever? (a) a tap handle (b) a sloping road (c) a see-saw (d) a crane
16. 16.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
17. 17.⚙️ Which of these is a lever? (a) a bottle opener (b) a well pulley (c) a steering wheel (d) a ramp
18. 18.True or false: a well pulley is an inclined plane. (a) False (b) True
19. 19.True or false: a bottle opener is an inclined plane. (a) False (b) True
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a battery cell (d) a pencil
21. 21.⚖️ 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
22. 22.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) turmeric powder (d) a small paper cup
24. 24.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a small paper cup (c) a battery cell (d) coins as the load
25. 25.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a sloping road (c) a spoon lifting a lid (d) a bottle opener
27. 27.⚖️ 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 keep it the same (c) we change it
28. 28.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
29. 29.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
30. 30.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) rope (c) magnet (d) battery
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) coins as the load (d) a small paper cup
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) string (c) a small paper cup (d) a pencil
33. 33.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) halves the weight (d) makes it magnetic
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
36. 36.⚖️ 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 cup of coins (b) number of pulleys (c) how hard we must pull (d) the lifting height
37. 37.True or false: a bottle opener is a lever. (a) False (b) True
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) an empty thread reel (c) a magnet (d) yeast
39. 39.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
40. 40.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle

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