Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 746 · 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 kept the same? (a) distance from the pencil (b) the kind of coins (c) which side goes down
2. 2.True or false: a spoon lifting a lid uses a pulley. (a) False (b) True
3. 3.⚖️ 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) the spoon is hot (d) a lever boosts your push
4. 4.True or false: a round pencil is needed for the ruler lever. (a) False (b) True
5. 5.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) coins of one kind (c) a flat table (d) turmeric powder
6. 6.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
7. 7.True or false: a 30 cm ruler is not needed for the ruler lever. (a) True (b) False
8. 8.True or false: yeast is needed for the ruler lever. (a) True (b) False
9. 9.🧺 Do we need yeast for the ruler lever? (a) not needed (b) needed
10. 10.⚖️ What is the turning point of a lever called? (a) the axle (b) the load (c) the fulcrum (d) the effort
11. 11.⚙️ Which of these uses a pulley? (a) a flagpole (b) a see-saw (c) a steering wheel (d) a ramp
12. 12.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
13. 13.🛟 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
14. 14.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) a flat table (c) a 30 cm ruler (d) a mirror
15. 15.🧺 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 round pencil (d) turmeric powder
16. 16.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a magnet (c) a battery cell (d) a round pencil
17. 17.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) yeast (c) a 30 cm ruler (d) coins of one kind
18. 18.⚖️ 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
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) distance from the pencil (b) where the pencil is (c) which side goes down
20. 20.True or false: a magnet is not needed for the ruler lever. (a) False (b) True
21. 21.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) the left side (b) neither, it balances (c) both go up (d) the right side
22. 22.True or false: turmeric powder is not needed for the ruler lever. (a) False (b) True
23. 23.⚙️ Which simple machine is a doorknob? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
24. 24.🧺 Which of these is needed for the ruler lever? (a) coins of one kind (b) a battery cell (c) a mirror (d) a balloon
25. 25.⚖️ 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) the same ruler (c) the kind of coins (d) where the pencil is
26. 26.True or false: a see-saw is an inclined plane. (a) False (b) True
27. 27.🧺 Do we need coins of one kind for the ruler lever? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) an inclined plane (c) a lever (d) a pulley
30. 30.⚖️ A ruler balances on a pencil at its middle. You place 1 coin 6 cm to the left of the pencil and 3 coins on the right. How many cm from the pencil must the right-hand coins go to balance it?
31. 31.🧺 Which of these is not needed for the ruler lever? (a) a balloon (b) a flat table (c) a round pencil (d) coins of one kind
32. 32.⚙️ Which of these uses a pulley? (a) a see-saw (b) a sloping road (c) a steering wheel (d) a crane
33. 33.🧺 Do we need a battery cell for the ruler lever? (a) needed (b) not needed
34. 34.⚖️ Coins on the two sides balance when coins × distance is ___. (a) bigger on the left (b) equal on both sides (c) always 10 (d) zero
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🧺 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 magnet (d) a 30 cm ruler
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) harder (b) easier (c) impossible (d) the same
39. 39.🧺 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 battery cell (d) a flat table
40. 40.⚙️ Which of these is a lever? (a) a sloping road (b) a well pulley (c) a crowbar (d) a doorknob

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