Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 496 · 40 questions

What you do (Coins × distance): 1. Balance the ruler on the pencil at its 15 cm mark. 2. Put coins at a measured distance on the left side. 3. Place coins on the right and slide them until the ruler balances. 4. Check: coins × distance on the left = coins × distance on the right; press gently.

1. 1.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) a lever boosts your push (b) the spoon is hot (c) the spoon is magnetic (d) the lid gets softer
2. 2.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) the number of coins (b) distance from the pencil (c) the kind of coins (d) which side goes down
3. 3.⚙️ Which of these is a wheel and axle? (a) a spoon lifting a lid (b) a doorknob (c) a bottle opener (d) a ramp
4. 4.🧺 Which of these is needed for the ruler lever? (a) a flat table (b) a mirror (c) yeast (d) turmeric powder
5. 5.⚙️ Which of these is a lever? (a) a well pulley (b) a spoon lifting a lid (c) a steering wheel (d) a slide
6. 6.⚙️ Which of these uses a pulley? (a) a sloping road (b) a well pulley (c) a ramp (d) a bottle opener
7. 7.🧺 Do we need a battery cell for the ruler lever? (a) not needed (b) needed
8. 8.True or false: yeast is needed for the ruler lever. (a) True (b) False
9. 9.True or false: a magnet is needed for the ruler lever. (a) True (b) False
10. 10.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the same ruler”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Do we need a balloon for the ruler lever? (a) needed (b) not needed
12. 12.True or false: a steering wheel is a lever. (a) False (b) True
13. 13.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is kept the same. (a) True (b) False
14. 14.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
15. 15.True or false: a mirror is not needed for the ruler lever. (a) False (b) True
16. 16.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a round pencil (c) coins of one kind (d) turmeric powder
17. 17.True or false: a tap handle uses a pulley. (a) True (b) False
18. 18.⚖️ Coins on the two sides balance when coins × distance is ___. (a) zero (b) equal on both sides (c) always 10 (d) bigger on the left
19. 19.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) which side goes down (b) the number of coins (c) distance from the pencil
20. 20.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
21. 21.⚙️ Which simple machine is a sloping road? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
22. 22.⚙️ Which of these uses a pulley? (a) a flagpole (b) a slide (c) a sloping road (d) a see-saw
23. 23.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) yeast (c) a round pencil (d) a flat table
24. 24.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the kind of coins is kept the same. (a) False (b) True
25. 25.🧺 Do we need a flat table for the ruler lever? (a) not needed (b) needed
26. 26.⚙️ Which simple machine is a ramp? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
27. 27.🧺 Which of these is needed for the ruler lever? (a) turmeric powder (b) a magnet (c) yeast (d) a round pencil
28. 28.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is what we measure. (a) False (b) True
29. 29.🧺 Which of these is needed for the ruler lever? (a) turmeric powder (b) a magnet (c) yeast (d) coins of one kind
30. 30.True or false: a sloping road is an inclined plane. (a) False (b) True
31. 31.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a flat table (c) a round pencil (d) a battery cell
32. 32.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is kept the same. (a) False (b) True
33. 33.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “distance from the pencil”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Which of these is not needed for the ruler lever? (a) a mirror (b) coins of one kind (c) a flat table (d) a 30 cm ruler
35. 35.True or false: a well pulley uses a pulley. (a) True (b) False
36. 36.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is what we measure. (a) True (b) False
37. 37.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) the same (b) harder (c) impossible (d) easier
38. 38.True or false: a spoon lifting a lid uses a pulley. (a) True (b) False
39. 39.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the kind of coins”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.True or false: coins of one kind is needed for the ruler lever. (a) True (b) False

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