Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 89 · 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.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) down (b) sideways (c) in a circle (d) up
2. 2.True or false: a sloping road is a wheel and axle. (a) False (b) True
3. 3.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
4. 4.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a slide (c) a bottle opener (d) a well pulley
5. 5.True or false: a spoon lifting a lid is a lever. (a) False (b) True
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) impossible (c) easier (d) harder
7. 7.⚖️ 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
8. 8.⚙️ Which of these is a lever? (a) a crane (b) a doorknob (c) a see-saw (d) a ramp
9. 9.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
10. 10.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 20 cm (d) 10 cm
11. 11.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a small paper cup (d) a battery cell
12. 12.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it is magnetic (c) it could fall on you (d) it might sing
13. 13.⚙️ Which of these is a wheel and axle? (a) a sloping road (b) a ramp (c) a flagpole (d) a tap handle
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a battery cell (d) an empty thread reel
15. 15.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) changes pull direction (c) makes it magnetic (d) halves the weight
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 same cup of coins (b) number of pulleys (c) the lifting height (d) how hard we must pull
17. 17.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets wet (d) it gets longer
18. 18.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
19. 19.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) coins as the load (c) a battery cell (d) a balloon
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.True or false: a magnet is needed for the thread-reel pulley. (a) False (b) True
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a small paper cup (c) string (d) coins as the load
24. 24.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
25. 25.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
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) a small paper cup
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a small paper cup (c) a mirror (d) a pencil
29. 29.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚙️ Which simple machine is a steering wheel? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
31. 31.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
32. 32.True or false: coins as the load is not needed for the thread-reel pulley. (a) False (b) True
33. 33.⚙️ Which simple machine is a tap handle? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
34. 34.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) a mirror (d) a pencil
36. 36.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a flagpole (c) a sloping road (d) a crowbar
37. 37.🏗️ Why is a pulley used to lift water from a deep well? (a) water gets lighter (b) the rope gets shorter (c) the bucket floats (d) pulling down is easier
38. 38.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
39. 39.⚖️ 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
40. 40.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True

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