Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 172 · 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? Which of these is what we measure? (a) the number of coins (b) which side goes down (c) the same ruler (d) distance from the pencil
2. 2.True or false: a ramp uses a pulley. (a) False (b) True
3. 3.🔮 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
4. 4.⚖️ 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) distance from the pencil (b) where the pencil is (c) the kind of coins (d) the number of coins
5. 5.⚙️ Which of these is a lever? (a) a well pulley (b) a steering wheel (c) a spoon lifting a lid (d) a ramp
6. 6.True or false: a magnet is not needed for the ruler lever. (a) False (b) True
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) a 30 cm ruler (c) a flat table (d) a battery cell
9. 9.⚖️ On a see-saw, how can a light child balance a heavier child? (a) sit farther from middle (b) sit closer to middle (c) sit on the middle (d) jump up and down
10. 10.⚖️ 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 measure it (b) we keep it the same (c) we change it
11. 11.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a balloon (b) coins of one kind (c) a flat table (d) a round pencil
12. 12.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is the one thing we change. (a) False (b) True
13. 13.🧺 Do we need a 30 cm ruler for the ruler lever? (a) not needed (b) needed
14. 14.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) the spoon is hot (b) a lever boosts your push (c) the spoon is magnetic (d) the lid gets softer
15. 15.🧺 Do we need turmeric powder for the ruler lever? (a) needed (b) not needed
16. 16.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is the one thing we change. (a) False (b) True
17. 17.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the kind of coins is the one thing we change. (a) True (b) False
18. 18.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) impossible (b) the same (c) harder (d) easier
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a round pencil (c) a flat table (d) a battery cell
21. 21.True or false: a crane is an inclined plane. (a) True (b) False
22. 22.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a mirror (c) a round pencil (d) a 30 cm ruler
23. 23.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a magnet (b) a 30 cm ruler (c) coins of one kind (d) a round pencil
24. 24.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) a flat table (c) coins of one kind (d) yeast
25. 25.True or false: a balloon is needed for the ruler lever. (a) False (b) True
26. 26.🧺 Do we need a magnet for the ruler lever? (a) not needed (b) needed
27. 27.⚙️ Which of these is a lever? (a) a flagpole (b) a see-saw (c) a steering wheel (d) a crane
28. 28.True or false: a slide is a lever. (a) False (b) True
29. 29.⚖️ A ruler balances on a pencil at its middle. You place 4 coins 8 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?
30. 30.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
31. 31.⚖️ A ruler balances on a pencil at its middle. You place 6 coins 3 cm to the left of the pencil. How many coins must you place 6 cm to the right to balance it?
32. 32.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) a flat table (c) yeast (d) a 30 cm ruler
33. 33.True or false: a sloping road is an inclined plane. (a) False (b) True
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.⚙️ Which of these is an inclined plane? (a) a ramp (b) a tap handle (c) a steering wheel (d) a well pulley
36. 36.⚙️ Which simple machine is a see-saw? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
37. 37.True or false: a bottle opener uses a pulley. (a) True (b) False
38. 38.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) a flat table (c) turmeric powder (d) coins of one kind
39. 39.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
40. 40.🧺 Which of these is needed for the ruler lever? (a) yeast (b) a mirror (c) a magnet (d) a 30 cm ruler

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