Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 962 · 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.True or false: a steering wheel is a lever. (a) False (b) True
2. 2.True or false: a ramp is an inclined plane. (a) False (b) True
3. 3.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets wet (c) it gets longer (d) it can hurt your finger
4. 4.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) the same (b) about half (c) zero (d) double
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.📘 A pulley is a wheel with a groove for a ___. (a) nail (b) magnet (c) battery (d) rope
7. 7.True or false: a doorknob is a wheel and axle. (a) True (b) False
8. 8.⚙️ Which simple machine is a crane? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) True (b) False
10. 10.True or false: turmeric powder is not needed for the thread-reel pulley. (a) False (b) True
11. 11.True or false: a tap handle is a wheel and axle. (a) False (b) True
12. 12.🛟 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
13. 13.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
14. 14.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a pencil (d) a mirror
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) string (c) a magnet (d) a small paper cup
20. 20.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a slide (c) a tap handle (d) a well pulley
21. 21.⚖️ 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) the same string (c) how hard we must pull (d) number of pulleys
22. 22.⚙️ Which of these is an inclined plane? (a) a ramp (b) a tap handle (c) a flagpole (d) a steering wheel
23. 23.⚖️ 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) True (b) False
24. 24.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
25. 25.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 40 cm (c) 5 cm (d) 20 cm
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the flagpole (d) on the bench
27. 27.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a battery cell (c) yeast (d) a small paper cup
28. 28.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
29. 29.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) halves the weight (c) changes pull direction (d) makes it magnetic
30. 30.⚖️ 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) how hard we must pull (c) the lifting height (d) the same string
31. 31.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
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 battery cell (d) string
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) coins as the load (c) a small paper cup (d) a balloon
34. 34.⚙️ Which simple machine is a steering wheel? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
35. 35.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
36. 36.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
37. 37.True or false: a bottle opener is a lever. (a) False (b) True
38. 38.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
39. 39.True or false: a well pulley uses a pulley. (a) False (b) True
40. 40.🧺 Which of these is not needed for the thread-reel pulley? (a) yeast (b) a small paper cup (c) an empty thread reel (d) string

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