Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 196 · 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.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) string (c) a small paper cup (d) an empty thread reel
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a small paper cup (c) a pencil (d) turmeric powder
3. 3.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
4. 4.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 10 cm (b) 20 cm (c) 40 cm (d) 5 cm
5. 5.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it turns blue (c) it can hurt your finger (d) it gets longer
6. 6.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) the same (d) easier
7. 7.⚙️ Which of these is a wheel and axle? (a) a well pulley (b) a tap handle (c) a flagpole (d) a see-saw
8. 8.⚙️ Which of these is a lever? (a) a ramp (b) a spoon lifting a lid (c) a doorknob (d) a well pulley
9. 9.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it might sing (c) it gets hot (d) it could fall on you
10. 10.⚙️ Which simple machine is a tap handle? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
11. 11.True or false: yeast is not needed for the thread-reel pulley. (a) False (b) True
12. 12.⚖️ 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) how hard we must pull
13. 13.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a magnet (c) a pencil (d) turmeric powder
14. 14.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
15. 15.True or false: a magnet is needed for the thread-reel pulley. (a) True (b) False
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
17. 17.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) makes it magnetic (c) halves the weight (d) adds weight
18. 18.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.⚙️ Which of these uses a pulley? (a) a ramp (b) a crowbar (c) a well pulley (d) a see-saw
21. 21.⚖️ 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
22. 22.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
23. 23.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) down (c) in a circle (d) sideways
24. 24.True or false: a tap handle is a wheel and axle. (a) False (b) True
25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) an empty thread reel (b) coins as the load (c) a small paper cup (d) a magnet
26. 26.🧺 Which of these is needed for the thread-reel pulley? (a) yeast (b) a balloon (c) a battery cell (d) coins as the load
27. 27.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a balloon (c) a magnet (d) a mirror
29. 29.🧺 Do we need a balloon for the thread-reel pulley? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) an empty thread reel (c) yeast (d) a small paper cup
31. 31.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) turmeric powder (c) an empty thread reel (d) yeast
32. 32.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the bench (b) in the tap (c) on the flagpole (d) on the blackboard
33. 33.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) a small paper cup (d) a mirror
34. 34.⚙️ Which of these is a lever? (a) a steering wheel (b) a slide (c) a ramp (d) a crowbar
35. 35.⚙️ Which of these uses a pulley? (a) a spoon lifting a lid (b) a crane (c) a doorknob (d) a crowbar
36. 36.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) a magnet (c) a pencil (d) a small paper cup
37. 37.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.⚙️ Which of these is a lever? (a) a slide (b) a steering wheel (c) a bottle opener (d) a crane

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