Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 614 · 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 well pulley (b) a steering wheel (c) a tap handle (d) a bottle opener
2. 2.⚖️ 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
3. 3.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) changes pull direction (d) makes it magnetic
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a balloon (c) a pencil (d) coins as the load
5. 5.⚖️ 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
6. 6.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a spoon lifting a lid (d) a ramp
7. 7.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) a pencil
9. 9.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a bottle opener (c) a crane (d) a tap handle
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) an empty thread reel (c) yeast (d) a small paper cup
12. 12.⚖️ 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
13. 13.⚙️ Which of these uses a pulley? (a) a tap handle (b) a crowbar (c) a flagpole (d) a see-saw
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a mirror (c) a magnet (d) a battery cell
15. 15.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
16. 16.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) a pencil (d) a balloon
17. 17.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
18. 18.True or false: a steering wheel is an inclined plane. (a) True (b) False
19. 19.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
20. 20.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) zero (b) the same (c) about half (d) double
21. 21.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
22. 22.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it can hurt your finger (c) it turns blue (d) it gets wet
23. 23.⚙️ Which of these is an inclined plane? (a) a slide (b) a doorknob (c) a steering wheel (d) a spoon lifting a lid
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) how hard we must pull (c) the same cup of coins (d) number of pulleys
25. 25.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a see-saw (c) a ramp (d) a tap handle
26. 26.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) yeast (d) string
27. 27.⚖️ 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
28. 28.True or false: a see-saw uses a pulley. (a) False (b) True
29. 29.True or false: a flagpole is an inclined plane. (a) True (b) False
30. 30.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
31. 31.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
32. 32.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) easier (c) harder (d) the same
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a pencil (d) coins as the load
35. 35.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) magnet (c) nail (d) rope
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) the same cup of coins (c) how hard we must pull
37. 37.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) a battery cell (d) string
39. 39.⚖️ 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
40. 40.True or false: a ramp is an inclined plane. (a) True (b) False

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