Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 639 · 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 an inclined plane? (a) a crowbar (b) a flagpole (c) a slide (d) a crane
2. 2.True or false: a doorknob is an inclined plane. (a) False (b) True
3. 3.⚙️ Which of these uses a pulley? (a) a slide (b) a doorknob (c) a crowbar (d) a well pulley
4. 4.🛟 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
5. 5.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
6. 6.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a sloping road (c) a crane (d) a doorknob
7. 7.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) string (c) a pencil (d) a balloon
8. 8.True or false: a steering wheel is an inclined plane. (a) False (b) True
9. 9.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a pencil (c) a mirror (d) a small paper cup
10. 10.True or false: a balloon is needed for the thread-reel pulley. (a) False (b) True
11. 11.⚙️ Which of these is a lever? (a) a sloping road (b) a tap handle (c) a see-saw (d) a doorknob
12. 12.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
13. 13.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
14. 14.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) pulling down is easier (c) the bucket floats (d) water gets lighter
15. 15.True or false: a tap handle is an inclined plane. (a) False (b) True
16. 16.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crane (c) a doorknob (d) a ramp
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a battery cell (c) yeast (d) a balloon
18. 18.⚖️ 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
19. 19.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
20. 20.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) down (c) in a circle (d) up
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same cup of coins (b) the same string (c) how hard we must pull (d) the lifting height
22. 22.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
23. 23.🧺 Which of these is not needed for the thread-reel pulley? (a) a battery cell (b) string (c) a pencil (d) an empty thread reel
24. 24.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
25. 25.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is what we measure. (a) False (b) True
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) a pencil (c) yeast (d) string
29. 29.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a small paper cup (d) a magnet
31. 31.True or false: a tap handle is a wheel and axle. (a) False (b) True
32. 32.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
35. 35.⚖️ 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
36. 36.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) harder (d) easier
37. 37.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
38. 38.⚖️ 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 change it (c) we keep it the same
39. 39.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
40. 40.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a slide (c) a ramp (d) a spoon lifting a lid

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