Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 479 · 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.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the lifting height (b) number of pulleys (c) how hard we must pull
2. 2.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
4. 4.True or false: a steering wheel is a wheel and axle. (a) False (b) True
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) a balloon (d) coins as the load
6. 6.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) coins as the load (c) a battery cell (d) a small paper cup
7. 7.⚖️ 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
8. 8.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a bottle opener (c) a spoon lifting a lid (d) a tap handle
9. 9.⚖️ 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
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) the same string (b) number of pulleys (c) the same cup of coins (d) how hard we must pull
11. 11.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
12. 12.True or false: string is not needed for the thread-reel pulley. (a) False (b) True
13. 13.True or false: a tap handle is an inclined plane. (a) False (b) True
14. 14.⚙️ Which simple machine is a crowbar? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
15. 15.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a well pulley (c) a steering wheel (d) a ramp
16. 16.True or false: a flagpole is an inclined plane. (a) False (b) True
17. 17.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
18. 18.⚖️ 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 measure it (c) we change it
19. 19.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
20. 20.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
21. 21.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
22. 22.True or false: yeast is not 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) string (b) a mirror (c) coins as the load (d) a small paper cup
24. 24.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
25. 25.🛟 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
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a battery cell (c) a balloon (d) coins as the load
27. 27.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
28. 28.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
29. 29.⚖️ 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) the same cup of coins (c) how hard we must pull
30. 30.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) yeast (d) a pencil
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) a magnet (d) string
32. 32.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 40 cm (d) 10 cm
33. 33.True or false: a crane uses a pulley. (a) False (b) True
34. 34.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) yeast (c) an empty thread reel (d) a battery cell
36. 36.⚙️ Which of these is an inclined plane? (a) a slide (b) a spoon lifting a lid (c) a bottle opener (d) a see-saw
37. 37.True or false: a pencil is not needed for the thread-reel pulley. (a) True (b) False
38. 38.🏗️ 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
39. 39.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
40. 40.⚙️ Which simple machine is a crane? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley

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