Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 49 · 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 wheel and axle? (a) a ramp (b) a tap handle (c) a spoon lifting a lid (d) a slide
2. 2.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
3. 3.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
4. 4.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.⚖️ 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
7. 7.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a see-saw (c) a crane (d) a steering wheel
8. 8.⚖️ 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) how hard we must pull (c) the same cup of coins
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) an empty thread reel (c) a pencil (d) coins as the load
10. 10.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a steering wheel (c) a well pulley (d) a ramp
11. 11.⚙️ Which simple machine is a tap handle? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
12. 12.⚙️ Which simple machine is a flagpole? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
13. 13.🏗️ 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
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) string (d) a battery cell
15. 15.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a slide (c) a sloping road (d) a steering wheel
16. 16.⚙️ Which simple machine is a ramp? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) a pencil (d) a small paper cup
18. 18.True or false: a battery cell is not needed for the thread-reel pulley. (a) False (b) True
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is the one thing we change. (a) False (b) True
20. 20.⚙️ Which simple machine is a doorknob? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) yeast (d) coins as the load
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) coins as the load (c) yeast (d) a magnet
24. 24.🛟 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
25. 25.⚖️ 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
26. 26.⚖️ 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) False (b) True
27. 27.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) False (b) True
28. 28.True or false: a steering wheel is a wheel and axle. (a) True (b) False
29. 29.True or false: a ramp is a lever. (a) False (b) True
30. 30.⚖️ 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
31. 31.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
32. 32.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) in a circle (d) down
33. 33.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
34. 34.⚖️ 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) the same cup of coins (c) the lifting height (d) how hard we must pull
35. 35.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a doorknob (d) a see-saw
36. 36.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
37. 37.True or false: a tap handle is a wheel and axle. (a) True (b) False
38. 38.True or false: a ramp is an inclined plane. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
40. 40.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight

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