Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 211 · 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 needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a magnet (d) a battery cell
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a magnet (c) coins as the load (d) string
3. 3.⚙️ Which of these uses a pulley? (a) a crowbar (b) a bottle opener (c) a sloping road (d) a flagpole
4. 4.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) an empty thread reel (c) coins as the load (d) yeast
6. 6.🛟 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
7. 7.True or false: a doorknob is a wheel and axle. (a) True (b) False
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a balloon (d) a pencil
9. 9.⚖️ 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
10. 10.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
11. 11.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
12. 12.⚙️ Which simple machine is a tap handle? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
13. 13.⚖️ 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 measure it (c) we change it
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.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) sideways (d) down
16. 16.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
17. 17.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
18. 18.⚖️ 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) how hard we must pull (c) number of pulleys (d) the same string
19. 19.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
20. 20.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
21. 21.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) zero (c) about half (d) the same
22. 22.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a slide (c) a well pulley (d) a steering wheel
23. 23.⚖️ 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
24. 24.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) the same string (c) the same cup of coins (d) the lifting height
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) turmeric powder (d) an empty thread reel
29. 29.⚖️ 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
30. 30.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
33. 33.True or false: a ramp is an inclined plane. (a) False (b) True
34. 34.🧺 Do we need string 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 string is the one thing we change. (a) True (b) False
36. 36.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.⚙️ Which of these uses a pulley? (a) a slide (b) a well pulley (c) a spoon lifting a lid (d) a ramp
40. 40.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed

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