Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 633 · 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 crane (b) a flagpole (c) a well pulley (d) a see-saw
2. 2.⚖️ 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
3. 3.🧺 Do we need a small paper cup for the thread-reel pulley? (a) needed (b) not needed
4. 4.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) a pencil (d) a magnet
5. 5.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
6. 6.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
7. 7.🏗️ 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
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a small paper cup (b) a mirror (c) a pencil (d) coins as the load
9. 9.⚙️ Which of these is a lever? (a) a crane (b) a steering wheel (c) a slide (d) a bottle opener
10. 10.True or false: a tap handle is a wheel and axle. (a) True (b) False
11. 11.⚙️ Which simple machine is a well pulley? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
12. 12.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) about half (b) the same (c) zero (d) double
13. 13.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
14. 14.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
15. 15.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a spoon lifting a lid (c) a ramp (d) a well pulley
16. 16.⚙️ Which of these is a lever? (a) a well pulley (b) a steering wheel (c) a tap handle (d) a crowbar
17. 17.🛟 Why should you not wrap the string around your finger? (a) it gets wet (b) it can hurt your finger (c) it turns blue (d) it gets longer
18. 18.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it gets hot (c) it could fall on you (d) it is magnetic
19. 19.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a flagpole (c) a slide (d) a tap handle
20. 20.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
21. 21.⚖️ 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 lifting height (c) the same string (d) number of pulleys
22. 22.🧺 Which of these is needed for the thread-reel pulley? (a) string (b) a magnet (c) a battery cell (d) a mirror
23. 23.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
24. 24.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
25. 25.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a magnet (c) coins as the load (d) an empty thread reel
26. 26.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
27. 27.🧺 Do we need a magnet for the thread-reel pulley? (a) needed (b) not needed
28. 28.True or false: an empty thread reel is needed for the thread-reel pulley. (a) False (b) True
29. 29.🇮🇳 Where do we see a pulley at school on Independence Day? (a) in the tap (b) on the blackboard (c) on the bench (d) on the flagpole
30. 30.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the lifting height (b) the same cup of coins (c) the same string (d) number of pulleys
34. 34.True or false: a well pulley is a lever. (a) False (b) True
35. 35.🏗️ Why is a pulley used to lift water from a deep well? (a) the rope gets shorter (b) water gets lighter (c) the bucket floats (d) pulling down is easier
36. 36.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
37. 37.True or false: string is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) coins as the load (b) a pencil (c) a battery cell (d) an empty thread reel
39. 39.⚖️ 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
40. 40.True or false: a ramp uses a pulley. (a) True (b) False

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