Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 86 · 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? True or false: the same cup of coins is what we measure. (a) False (b) True
2. 2.True or false: a sloping road is a lever. (a) True (b) False
3. 3.⚖️ 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 cup of coins (b) number of pulleys (c) the lifting height (d) the same string
4. 4.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it might sing (d) it is magnetic
5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
6. 6.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) a mirror (d) a small paper cup
9. 9.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
13. 13.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
14. 14.⚖️ 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
15. 15.🧺 Do we need a small paper cup for the thread-reel pulley? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) yeast (c) coins as the load (d) a small paper cup
17. 17.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) an empty thread reel (c) a battery cell (d) coins as the load
18. 18.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a see-saw (c) a bottle opener (d) a crowbar
19. 19.True or false: an empty thread reel is needed for the thread-reel pulley. (a) True (b) False
20. 20.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) adds weight (c) makes it magnetic (d) changes pull direction
21. 21.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
22. 22.⚙️ Which of these is a lever? (a) a see-saw (b) a well pulley (c) a steering wheel (d) a tap handle
23. 23.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
24. 24.⚖️ 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 string (c) how hard we must pull
25. 25.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 5 cm (d) 40 cm
26. 26.⚖️ 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) True (b) False
27. 27.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) harder (d) impossible
28. 28.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
29. 29.⚖️ 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
30. 30.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets wet (c) it turns blue (d) it gets longer
31. 31.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
32. 32.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a pencil (c) a mirror (d) an empty thread reel
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) yeast (c) a mirror (d) string
34. 34.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
35. 35.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a crane (c) a sloping road (d) a see-saw
36. 36.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a crane (c) a sloping road (d) a well pulley
37. 37.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) an empty thread reel (d) a pencil
39. 39.⚖️ 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 cup of coins
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a pencil (c) string (d) a small paper cup

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