Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 988 · 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 needed for the thread-reel pulley? (a) a magnet (b) a pencil (c) a battery cell (d) a balloon
2. 2.⚖️ 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
3. 3.True or false: a sloping road is a lever. (a) True (b) False
4. 4.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
5. 5.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a magnet (c) string (d) yeast
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) a small paper cup (d) a pencil
7. 7.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
8. 8.⚙️ Which of these is a lever? (a) a tap handle (b) a steering wheel (c) a crowbar (d) a ramp
9. 9.⚙️ Which simple machine is a doorknob? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) how hard we must pull (b) the lifting height (c) the same cup of coins (d) number of pulleys
11. 11.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
12. 12.⚙️ Which of these is a lever? (a) a tap handle (b) a doorknob (c) a slide (d) a spoon lifting a lid
13. 13.True or false: a doorknob is a wheel and axle. (a) False (b) True
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a tap handle (c) a doorknob (d) a flagpole
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) number of pulleys (c) the same cup of coins
17. 17.🏗️ 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
18. 18.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) a pencil (d) a mirror
21. 21.True or false: a crane is an inclined plane. (a) True (b) False
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) how hard we must pull (b) the same string (c) the lifting height (d) number of pulleys
23. 23.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
24. 24.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
25. 25.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
26. 26.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
27. 27.True or false: a spoon lifting a lid is an inclined plane. (a) False (b) True
28. 28.🧺 Which of these is not needed for the thread-reel pulley? (a) a magnet (b) coins as the load (c) a small paper cup (d) an empty thread reel
29. 29.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
30. 30.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) rope (c) nail (d) magnet
31. 31.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
32. 32.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
33. 33.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
34. 34.⚙️ Which of these is a lever? (a) a steering wheel (b) a tap handle (c) a ramp (d) a see-saw
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it turns blue (c) it gets wet (d) it can hurt your finger
37. 37.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) a balloon (d) string
38. 38.True or false: a balloon is not needed for the thread-reel pulley. (a) False (b) True
39. 39.⚖️ 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 change it (c) we measure it
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) string (d) an empty thread reel

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