Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 194 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a balloon (c) a small paper cup (d) an empty thread reel
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) turmeric powder (b) a pencil (c) coins as the load (d) an empty thread reel
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) yeast (c) an empty thread reel (d) coins as the load
4. 4.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
5. 5.True or false: a ramp is an inclined plane. (a) False (b) True
6. 6.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) string (c) a pencil (d) coins as the load
7. 7.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) True (b) False
9. 9.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a battery cell (c) an empty thread reel (d) string
12. 12.⚖️ 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
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
14. 14.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
15. 15.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
16. 16.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
17. 17.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) water gets lighter (d) the rope gets shorter
18. 18.⚖️ 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) the same string (c) number of pulleys (d) the same cup of coins
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a mirror (d) coins as the load
21. 21.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
22. 22.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) number of pulleys (c) the same string (d) how hard we must pull
25. 25.⚖️ 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
26. 26.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) turmeric powder (c) a small paper cup (d) a magnet
28. 28.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) turmeric powder (c) coins as the load (d) a small paper cup
30. 30.True or false: a doorknob is a lever. (a) False (b) True
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) an empty thread reel (d) a mirror
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
33. 33.True or false: a crowbar is a lever. (a) False (b) True
34. 34.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) up (d) in a circle
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) battery (c) nail (d) rope
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
37. 37.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a spoon lifting a lid (c) a bottle opener (d) a sloping road
38. 38.True or false: coins as the load is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a well pulley (c) a spoon lifting a lid (d) a ramp
40. 40.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False

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