Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 149 · 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? Which of these is what we measure? (a) the lifting height (b) the same cup of coins (c) how hard we must pull (d) the same string
2. 2.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
3. 3.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) yeast (d) a small paper cup
5. 5.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) coins as the load (c) a balloon (d) an empty thread reel
6. 6.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
7. 7.🧺 Do we need coins as the load for the thread-reel pulley? (a) needed (b) not needed
8. 8.True or false: a see-saw is an inclined plane. (a) True (b) False
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.⚙️ Which simple machine is a sloping road? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
11. 11.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
12. 12.True or false: a pencil is needed for the thread-reel pulley. (a) False (b) True
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a mirror (b) a magnet (c) coins as the load (d) a battery cell
14. 14.⚙️ Which of these uses a pulley? (a) a tap handle (b) a bottle opener (c) a see-saw (d) a crane
15. 15.⚖️ 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
16. 16.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
17. 17.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) the bucket floats (d) water gets lighter
18. 18.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) adds weight (d) halves the weight
19. 19.⚖️ 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) False (b) True
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a magnet (c) string (d) coins as the load
22. 22.⚙️ Which of these is a wheel and axle? (a) a bottle opener (b) a well pulley (c) a see-saw (d) a tap handle
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) turmeric powder (b) string (c) yeast (d) a mirror
24. 24.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
25. 25.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
26. 26.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
27. 27.True or false: a sloping road uses a pulley. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a pencil (c) an empty thread reel (d) a mirror
30. 30.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
31. 31.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a flagpole (d) a bottle opener
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) number of pulleys (b) how hard we must pull (c) the lifting height (d) the same cup of coins
33. 33.🧺 Do we need a mirror for the thread-reel pulley? (a) not needed (b) needed
34. 34.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 10 cm (c) 5 cm (d) 40 cm
35. 35.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a sloping road (c) a bottle opener (d) a spoon lifting a lid
36. 36.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
37. 37.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
38. 38.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a battery cell (b) an empty thread reel (c) string (d) a pencil
39. 39.True or false: a sloping road is an inclined plane. (a) False (b) True
40. 40.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley

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