Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 605 · 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 a lever? (a) a spoon lifting a lid (b) a slide (c) a sloping road (d) a ramp
2. 2.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) yeast (c) an empty thread reel (d) a pencil
3. 3.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
4. 4.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the same string (b) number of pulleys (c) how hard we must pull (d) the lifting height
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) a balloon (c) a pencil (d) yeast
7. 7.🧺 Do we need turmeric powder for the thread-reel pulley? (a) needed (b) not needed
8. 8.🧺 Do we need a magnet for the thread-reel pulley? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) string (c) coins as the load (d) a magnet
10. 10.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
11. 11.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
12. 12.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) turmeric powder (d) coins as the load
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
14. 14.⚖️ 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
15. 15.True or false: a tap handle is a wheel and axle. (a) True (b) False
16. 16.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) water gets lighter (d) the bucket floats
17. 17.⚙️ Which of these uses a pulley? (a) a tap handle (b) a bottle opener (c) a steering wheel (d) a flagpole
18. 18.🧺 Do we need coins as the load for the thread-reel pulley? (a) not needed (b) needed
19. 19.⚙️ Which of these uses a pulley? (a) a doorknob (b) a see-saw (c) a crane (d) a spoon lifting a lid
20. 20.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 20 cm (c) 40 cm (d) 10 cm
21. 21.⚖️ 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
22. 22.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) halves the weight (d) adds weight
23. 23.True or false: a tap handle is an inclined plane. (a) False (b) True
24. 24.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the thread-reel pulley? (a) an empty thread reel (b) a balloon (c) a mirror (d) turmeric powder
26. 26.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
27. 27.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a ramp (c) a see-saw (d) a spoon lifting a lid
28. 28.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) string (c) a small paper cup (d) a mirror
30. 30.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
31. 31.True or false: a sloping road is an inclined plane. (a) True (b) False
32. 32.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) a magnet (d) a small paper cup
33. 33.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) up (d) down
34. 34.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) easier (b) the same (c) impossible (d) harder
35. 35.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) needed (b) not needed
36. 36.⚖️ 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) True (b) False
37. 37.⚖️ 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) how hard we must pull (c) number of pulleys (d) the lifting height
38. 38.⚙️ Which simple machine is a doorknob? (a) a wheel and axle (b) a pulley (c) a lever (d) an inclined plane
39. 39.True or false: a slide is an inclined plane. (a) False (b) True
40. 40.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a spoon lifting a lid (c) a see-saw (d) a slide

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids