Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 373 · 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.🧺 Do we need a balloon for the ruler lever? (a) needed (b) not needed
2. 2.True or false: a ramp is an inclined plane. (a) False (b) True
3. 3.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
4. 4.🛟 What is a safe way to use a ruler as a lever? (a) flick coins at faces (b) bend it till it snaps (c) stand on the ruler (d) press it gently
5. 5.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) a battery cell (c) coins of one kind (d) a 30 cm ruler
6. 6.🧺 Do we need turmeric powder for the ruler lever? (a) not needed (b) needed
7. 7.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) distance from the pencil (b) the kind of coins (c) which side goes down (d) the number of coins
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is kept the same. (a) False (b) True
10. 10.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) neither, it balances (b) the right side (c) the left side (d) both go up
11. 11.🛟 Why should coins be kept away from very small children? (a) they are magnetic (b) they are too shiny (c) they may swallow them (d) they are too cold
12. 12.⚖️ 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) distance from the pencil (c) where the pencil is (d) the same ruler
13. 13.🧺 Which of these is needed for the ruler lever? (a) yeast (b) a battery cell (c) a flat table (d) turmeric powder
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a tap handle (c) a slide (d) a sloping road
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the ruler lever? (a) turmeric powder (b) a magnet (c) a round pencil (d) a balloon
18. 18.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a round pencil (c) a flat table (d) yeast
19. 19.True or false: a crowbar is a lever. (a) False (b) True
20. 20.🧺 Do we need a flat table for the ruler lever? (a) not needed (b) needed
21. 21.🧺 Do we need a 30 cm ruler for the ruler lever? (a) needed (b) not needed
22. 22.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
23. 23.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “which side goes down”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.True or false: a balloon is not needed for the ruler lever. (a) False (b) True
25. 25.True or false: a steering wheel is an inclined plane. (a) True (b) False
26. 26.🧺 Which of these is needed for the ruler lever? (a) a battery cell (b) a balloon (c) a 30 cm ruler (d) a mirror
27. 27.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) the lid gets softer (b) the spoon is hot (c) the spoon is magnetic (d) a lever boosts your push
28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a 30 cm ruler (c) a balloon (d) a round pencil
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) the kind of coins (b) distance from the pencil (c) which side goes down
31. 31.True or false: turmeric powder is not needed for the ruler lever. (a) False (b) True
32. 32.🧺 Do we need a magnet for the ruler lever? (a) not needed (b) needed
33. 33.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is what we measure. (a) True (b) False
34. 34.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a magnet (c) coins of one kind (d) a flat table
35. 35.⚙️ Which of these is an inclined plane? (a) a bottle opener (b) a flagpole (c) a slide (d) a crowbar
36. 36.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) coins of one kind (c) turmeric powder (d) a battery cell
37. 37.⚖️ On a see-saw, how can a light child balance a heavier child? (a) sit closer to middle (b) sit farther from middle (c) jump up and down (d) sit on the middle
38. 38.⚙️ Which of these is an inclined plane? (a) a spoon lifting a lid (b) a bottle opener (c) a well pulley (d) a sloping road
39. 39.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a mirror (c) a flat table (d) a 30 cm ruler
40. 40.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever

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