Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 714 · 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? What do we do with “the same string”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.True or false: a crane uses a pulley. (a) True (b) False
3. 3.⚙️ Which of these is a lever? (a) a crane (b) a tap handle (c) a crowbar (d) a sloping road
4. 4.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
5. 5.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) the rope gets shorter (d) pulling down is easier
6. 6.⚖️ 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) how hard we must pull (c) number of pulleys (d) the same cup of coins
7. 7.🏗️ 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
8. 8.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) coins as the load (c) a balloon (d) a pencil
9. 9.🛟 Why should you never stand under a load being lifted? (a) it might sing (b) it is magnetic (c) it gets hot (d) it could fall on you
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ 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
12. 12.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a slide (c) a crowbar (d) a tap handle
13. 13.True or false: turmeric powder is not needed for the thread-reel pulley. (a) True (b) False
14. 14.True or false: a see-saw is a lever. (a) True (b) False
15. 15.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) an empty thread reel (d) a battery cell
16. 16.🧺 Do we need a pencil for the thread-reel pulley? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 20 cm (d) 10 cm
19. 19.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
20. 20.🧺 Do we need an empty thread reel for the thread-reel pulley? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) a battery cell (c) an empty thread reel (d) a magnet
22. 22.⚙️ Which simple machine is a slide? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
23. 23.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a pencil (c) a small paper cup (d) yeast
24. 24.⚙️ Which of these is a wheel and axle? (a) a slide (b) a tap handle (c) a ramp (d) a flagpole
25. 25.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) halves the weight (c) makes it magnetic (d) adds weight
26. 26.⚖️ 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
27. 27.True or false: a tap handle is a wheel and axle. (a) True (b) False
28. 28.🇮🇳 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
29. 29.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it gets longer (c) it can hurt your finger (d) it gets wet
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
31. 31.🧺 Do we need yeast for the thread-reel pulley? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.⚙️ Which simple machine is a sloping road? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
34. 34.⚖️ 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
35. 35.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
36. 36.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a sloping road (c) a crowbar (d) a see-saw
37. 37.True or false: yeast is not needed for the thread-reel pulley. (a) True (b) False
38. 38.True or false: a mirror is not needed for the thread-reel pulley. (a) True (b) False
39. 39.True or false: a ramp is an inclined plane. (a) False (b) True
40. 40.⚖️ 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 keep it the same (c) we measure it

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