Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 856 · 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.⚖️ 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 keep it the same (b) we change it (c) we measure it
2. 2.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: where the pencil is is the one thing we change. (a) True (b) False
3. 3.⚙️ Which of these is a lever? (a) a steering wheel (b) a see-saw (c) a well pulley (d) a sloping road
4. 4.🧺 Do we need yeast for the ruler lever? (a) needed (b) not needed
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.⚖️ 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) True (b) False
7. 7.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a well pulley (c) a ramp (d) a doorknob
8. 8.True or false: a see-saw uses a pulley. (a) True (b) False
9. 9.True or false: a spoon lifting a lid is a wheel and axle. (a) True (b) False
10. 10.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is the one thing we change? (a) the number of coins (b) the kind of coins (c) where the pencil is (d) distance from the pencil
11. 11.True or false: a crowbar uses a pulley. (a) True (b) False
12. 12.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) both go up (b) neither, it balances (c) the left side (d) the right side
13. 13.🧺 Do we need a mirror for the ruler lever? (a) needed (b) not needed
14. 14.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
15. 15.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a flat table (c) turmeric powder (d) a battery cell
17. 17.⚙️ Which simple machine is a spoon lifting a lid? (a) a pulley (b) a wheel and axle (c) an inclined plane (d) a lever
18. 18.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) distance from the pencil (b) the kind of coins (c) which side goes down
19. 19.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) where the pencil is (b) which side goes down (c) the number of coins (d) distance from the pencil
20. 20.⚖️ 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) False (b) True
21. 21.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) distance from the pencil (b) the number of coins (c) which side goes down
22. 22.True or false: a ramp is an inclined plane. (a) True (b) False
23. 23.True or false: a see-saw is a lever. (a) True (b) False
24. 24.True or false: a balloon is needed for the ruler lever. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the ruler lever? (a) needed (b) not needed
26. 26.True or false: turmeric powder is not needed for the ruler lever. (a) False (b) True
27. 27.🧺 Do we need a round pencil for the ruler lever? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) a round pencil (c) a mirror (d) a flat table
29. 29.⚖️ Coins on the two sides balance when coins × distance is ___. (a) equal on both sides (b) bigger on the left (c) always 10 (d) zero
30. 30.⚙️ Which simple machine is a see-saw? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
31. 31.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) the same (b) impossible (c) easier (d) harder
32. 32.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “where the pencil is”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) coins of one kind (c) a magnet (d) a round pencil
34. 34.🧺 Do we need turmeric powder for the ruler lever? (a) needed (b) not needed
35. 35.⚙️ Which of these is a lever? (a) a crane (b) a steering wheel (c) a spoon lifting a lid (d) a well pulley
36. 36.⚙️ Which of these uses a pulley? (a) a crowbar (b) a bottle opener (c) a see-saw (d) a well pulley
37. 37.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is the one thing we change. (a) False (b) True
38. 38.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
39. 39.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the number of coins”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🛟 Why should coins be kept away from very small children? (a) they are too shiny (b) they may swallow them (c) they are too cold (d) they are magnetic

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