Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 308 · 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.True or false: a spoon lifting a lid is a lever. (a) True (b) False
2. 2.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it could fall on you (d) it is magnetic
3. 3.⚖️ 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) False (b) True
4. 4.🧺 Which of these is not needed for the thread-reel pulley? (a) a balloon (b) an empty thread reel (c) a small paper cup (d) coins as the load
5. 5.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
6. 6.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a sloping road (c) a steering wheel (d) a well pulley
7. 7.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) changes pull direction (d) makes it magnetic
8. 8.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) the bucket floats (c) water gets lighter (d) pulling down is easier
9. 9.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 40 cm (c) 5 cm (d) 10 cm
10. 10.⚖️ 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 string
11. 11.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it gets longer (d) it turns blue
12. 12.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) yeast (c) a balloon (d) a pencil
15. 15.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) an empty thread reel (d) a battery cell
16. 16.⚖️ 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 cup of coins (c) number of pulleys (d) how hard we must pull
17. 17.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
18. 18.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) the same (c) impossible (d) easier
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) yeast (c) an empty thread reel (d) string
20. 20.⚙️ Which simple machine is a slide? (a) a lever (b) a wheel and axle (c) a pulley (d) an inclined plane
21. 21.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
22. 22.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
23. 23.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
24. 24.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
25. 25.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a flagpole (c) a crane (d) a slide
26. 26.⚙️ Which of these is a wheel and axle? (a) a crane (b) a see-saw (c) a ramp (d) a tap handle
27. 27.⚖️ 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
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
29. 29.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
30. 30.True or false: a slide is a lever. (a) True (b) False
31. 31.True or false: a steering wheel is a lever. (a) False (b) True
32. 32.⚙️ Which of these is a lever? (a) a ramp (b) a tap handle (c) a flagpole (d) a spoon lifting a lid
33. 33.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a magnet (d) a small paper cup
34. 34.⚙️ Which simple machine is a see-saw? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
35. 35.🏗️ 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
36. 36.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a tap handle (c) a spoon lifting a lid (d) a sloping road
37. 37.🧺 Do we need yeast 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? Which of these is what we measure? (a) the same cup of coins (b) the lifting height (c) how hard we must pull (d) the same string
39. 39.⚙️ Which of these uses a pulley? (a) a ramp (b) a sloping road (c) a flagpole (d) a tap handle
40. 40.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed

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