Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 664 · 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.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
2. 2.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) coins as the load (c) string (d) a pencil
4. 4.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it could fall on you (c) it might sing (d) it gets hot
5. 5.⚙️ Which of these uses a pulley? (a) a see-saw (b) a crowbar (c) a doorknob (d) a crane
6. 6.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
7. 7.True or false: a bottle opener is a wheel and axle. (a) False (b) True
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) string (d) a pencil
10. 10.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
11. 11.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) a battery cell
14. 14.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) yeast (b) string (c) an empty thread reel (d) a pencil
15. 15.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 10 cm (d) 5 cm
16. 16.🏗️ 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
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a pencil (b) a battery cell (c) a magnet (d) a mirror
18. 18.True or false: coins as the load 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? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.True or false: a well pulley is a wheel and axle. (a) False (b) True
23. 23.True or false: a pencil is needed for the thread-reel pulley. (a) True (b) False
24. 24.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a small paper cup (d) coins as the load
27. 27.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) an empty thread reel (d) coins as the load
28. 28.⚙️ Which of these is a lever? (a) a sloping road (b) a see-saw (c) a flagpole (d) a well pulley
29. 29.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) rope (d) battery
30. 30.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a tap handle (c) a well pulley (d) a steering wheel
31. 31.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a sloping road (c) a spoon lifting a lid (d) a slide
32. 32.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it can hurt your finger (d) it gets longer
33. 33.⚖️ 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 string (b) number of pulleys (c) the lifting height (d) how hard we must pull
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 cup of coins (b) the same string (c) how hard we must pull (d) the lifting height
35. 35.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) harder (d) impossible
36. 36.⚙️ Which of these is a lever? (a) a crane (b) a ramp (c) a flagpole (d) a spoon lifting a lid
37. 37.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
38. 38.True or false: a slide uses a pulley. (a) True (b) False
39. 39.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
40. 40.⚖️ 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) True (b) False

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