Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 933 · 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 kept the same? (a) number of pulleys (b) the same string (c) how hard we must pull
2. 2.True or false: a bottle opener is a lever. (a) True (b) False
3. 3.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a crowbar (c) a tap handle (d) a sloping road
4. 4.True or false: turmeric powder is needed for the thread-reel pulley. (a) False (b) True
5. 5.🧺 Do we need string for the thread-reel pulley? (a) not needed (b) needed
6. 6.🛟 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
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a small paper cup (c) a battery cell (d) coins as the load
8. 8.True or false: a ramp is an inclined plane. (a) False (b) True
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) a pencil (d) turmeric powder
12. 12.⚙️ Which simple machine is a crowbar? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
13. 13.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
14. 14.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
15. 15.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.⚖️ 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 lifting height (c) number of pulleys
17. 17.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) the same (b) easier (c) impossible (d) harder
18. 18.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it might sing (c) it is magnetic (d) it could fall on you
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) turmeric powder (c) string (d) a mirror
21. 21.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is what we measure. (a) False (b) True
22. 22.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
23. 23.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
24. 24.⚖️ 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 string (c) the same cup of coins (d) number of pulleys
25. 25.🧺 Do we need a battery cell for the thread-reel pulley? (a) not needed (b) needed
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚙️ Which simple machine is a crane? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
28. 28.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) a small paper cup (d) coins as the load
29. 29.🧺 Do we need a pencil for the thread-reel pulley? (a) not needed (b) needed
30. 30.⚙️ Which of these is a lever? (a) a flagpole (b) a doorknob (c) a crowbar (d) a tap handle
31. 31.🧺 Do we need a mirror 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 what we measure. (a) True (b) False
33. 33.⚙️ Which of these is a wheel and axle? (a) a tap handle (b) a sloping road (c) a well pulley (d) a spoon lifting a lid
34. 34.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
35. 35.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a crane (c) a ramp (d) a flagpole
36. 36.⚖️ 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
37. 37.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a slide (c) a steering wheel (d) a bottle opener
38. 38.⚙️ Which of these uses a pulley? (a) a see-saw (b) a tap handle (c) a ramp (d) a well pulley
39. 39.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a balloon (c) coins as the load (d) string
40. 40.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) turmeric powder (b) a small paper cup (c) an empty thread reel (d) coins as the load

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