Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 469 · 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? True or false: where the pencil is is kept the same. (a) False (b) True
2. 2.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is what we measure. (a) True (b) False
3. 3.⚖️ 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) which side goes down (c) the same ruler (d) the number of coins
4. 4.⚖️ A ruler balances on a pencil at its middle. You place 6 coins 4 cm to the left of the pencil and 4 coins on the right. How many cm from the pencil must the right-hand coins go to balance it?
5. 5.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) turmeric powder (c) coins of one kind (d) a round pencil
6. 6.True or false: yeast is needed for the ruler lever. (a) False (b) True
7. 7.⚙️ Which of these uses a pulley? (a) a see-saw (b) a bottle opener (c) a crowbar (d) a well pulley
8. 8.True or false: a 30 cm ruler is needed for the ruler lever. (a) False (b) True
9. 9.⚖️ 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) where the pencil is (b) which side goes down (c) distance from the pencil (d) the kind of coins
10. 10.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
11. 11.🔮 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
12. 12.⚙️ Which of these is a lever? (a) a well pulley (b) a bottle opener (c) a tap handle (d) a ramp
13. 13.⚙️ Which of these is a wheel and axle? (a) a flagpole (b) a crowbar (c) a steering wheel (d) a ramp
14. 14.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) a 30 cm ruler (c) a flat table (d) a balloon
15. 15.⚖️ 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
16. 16.🛟 Why should coins be kept away from very small children? (a) they are too shiny (b) they are too cold (c) they may swallow them (d) they are magnetic
17. 17.🧺 Do we need turmeric powder for the ruler lever? (a) needed (b) not needed
18. 18.True or false: a doorknob is a wheel and axle. (a) True (b) False
19. 19.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
20. 20.🧺 Do we need coins of one kind for the ruler lever? (a) not needed (b) needed
21. 21.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) the spoon is magnetic (b) the lid gets softer (c) a lever boosts your push (d) the spoon is hot
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Which of these is not needed for the ruler lever? (a) turmeric powder (b) a 30 cm ruler (c) a flat table (d) coins of one kind
24. 24.⚖️ A ruler balances on a pencil at its middle. You place 5 coins 2 cm to the left of the pencil. How many coins must you place 10 cm to the right to balance it?
25. 25.True or false: a round pencil is not needed for the ruler lever. (a) True (b) False
26. 26.⚖️ On a see-saw, how can a light child balance a heavier child? (a) jump up and down (b) sit closer to middle (c) sit on the middle (d) sit farther from middle
27. 27.⚙️ Which of these is an inclined plane? (a) a crane (b) a well pulley (c) a sloping road (d) a tap handle
28. 28.⚙️ Which simple machine is a crowbar? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
29. 29.⚙️ Which of these is a lever? (a) a flagpole (b) a ramp (c) a tap handle (d) a see-saw
30. 30.🧺 Do we need a round pencil for the ruler lever? (a) not needed (b) needed
31. 31.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is kept the same. (a) True (b) False
32. 32.⚖️ 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) which side goes down (c) the kind of coins
33. 33.🧺 Which of these is needed for the ruler lever? (a) turmeric powder (b) yeast (c) a flat table (d) a battery cell
34. 34.⚖️ A ruler balances on a pencil at its middle. You place 2 coins 12 cm to the left of the pencil. How many coins must you place 4 cm to the right to balance it?
35. 35.True or false: a 30 cm ruler is not needed for the ruler lever. (a) False (b) True
36. 36.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) a magnet (c) a round pencil (d) a flat table
37. 37.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a magnet (c) a round pencil (d) a battery cell
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.True or false: coins of one kind is needed for the ruler lever. (a) False (b) True
40. 40.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a balloon (c) a round pencil (d) a 30 cm ruler

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