Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 358 · 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) yeast (b) a pencil (c) a mirror (d) turmeric powder
2. 2.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
3. 3.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 40 cm (d) 5 cm
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a small paper cup (b) turmeric powder (c) a balloon (d) a battery cell
5. 5.True or false: a well pulley is an inclined plane. (a) True (b) False
6. 6.⚖️ 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) number of pulleys (c) the same cup of coins
7. 7.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
8. 8.True or false: a balloon is not needed for the thread-reel pulley. (a) True (b) False
9. 9.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
10. 10.⚙️ Which of these uses a pulley? (a) a see-saw (b) a crowbar (c) a flagpole (d) a sloping road
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
12. 12.⚙️ Which of these uses a pulley? (a) a slide (b) a well pulley (c) a see-saw (d) a sloping road
13. 13.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) a pencil (c) a battery cell (d) coins as the load
14. 14.⚙️ Which simple machine is a sloping road? (a) a lever (b) an inclined plane (c) a pulley (d) a wheel and axle
15. 15.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it gets hot (c) it might sing (d) it is magnetic
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) harder (c) impossible (d) the same
18. 18.⚖️ 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 string (c) number of pulleys
19. 19.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) turmeric powder (d) coins as the load
20. 20.True or false: a small paper cup is not needed for the thread-reel pulley. (a) False (b) True
21. 21.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it gets longer (d) it can hurt your finger
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
23. 23.⚖️ 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) number of pulleys (d) the same string
24. 24.⚙️ Which of these is an inclined plane? (a) a crane (b) a flagpole (c) a tap handle (d) a ramp
25. 25.🏗️ What does a single fixed pulley mainly do? (a) halves the weight (b) changes pull direction (c) adds weight (d) makes it magnetic
26. 26.🧺 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 small paper cup (d) a balloon
27. 27.⚙️ Which of these is a lever? (a) a crane (b) a well pulley (c) a bottle opener (d) a slide
28. 28.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a steering wheel (c) a crowbar (d) a bottle opener
29. 29.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.⚙️ Which simple machine is a see-saw? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
32. 32.🇮🇳 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
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a balloon (c) a pencil (d) a small paper cup
36. 36.⚙️ Which simple machine is a bottle opener? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
37. 37.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a slide (c) a steering wheel (d) a tap handle
38. 38.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a mirror is needed for the thread-reel pulley. (a) False (b) True
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) True (b) False

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