Pulley STEM Project Worksheet

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

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