Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 965 · 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) coins as the load (b) yeast (c) turmeric powder (d) a mirror
2. 2.True or false: a tap handle is a wheel and axle. (a) True (b) False
3. 3.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
4. 4.🛟 Why should you not wrap the string around your finger? (a) it gets longer (b) it gets wet (c) it can hurt your finger (d) it turns blue
5. 5.True or false: a see-saw is an inclined plane. (a) False (b) True
6. 6.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it could fall on you (d) it gets hot
7. 7.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
8. 8.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
9. 9.⚖️ 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) the same cup of coins (c) number of pulleys
10. 10.True or false: a see-saw is a lever. (a) True (b) False
11. 11.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
12. 12.⚙️ Which of these is a lever? (a) a sloping road (b) a see-saw (c) a tap handle (d) a well pulley
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a mirror (c) coins as the load (d) an empty thread reel
14. 14.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 40 cm (b) 20 cm (c) 5 cm (d) 10 cm
15. 15.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) a battery cell (d) a pencil
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) coins as the load (d) a balloon
18. 18.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a balloon (c) a pencil (d) a battery cell
19. 19.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a mirror (c) a magnet (d) an empty thread reel
21. 21.True or false: a flagpole is a lever. (a) True (b) False
22. 22.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
23. 23.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
24. 24.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) double (c) zero (d) about half
25. 25.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
26. 26.⚖️ 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 cup of coins (c) the lifting height (d) the same string
27. 27.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) a pencil (d) string
28. 28.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
29. 29.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
30. 30.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) changes pull direction (d) halves the weight
31. 31.⚖️ 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) how hard we must pull (d) the same cup of coins
32. 32.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) in a circle (b) sideways (c) up (d) down
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ 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) the lifting height (c) number of pulleys
35. 35.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
36. 36.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) nail (c) battery (d) rope
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) False (b) True
38. 38.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
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 measure it (b) we change it (c) we keep it the same
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) an empty thread reel (c) string (d) turmeric powder

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