Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 571 · 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: the number of coins is kept the same. (a) False (b) True
2. 2.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a magnet (c) a 30 cm ruler (d) a round pencil
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) the left side (b) the right side (c) neither, it balances (d) both go up
4. 4.True or false: a battery cell is needed for the ruler lever. (a) True (b) False
5. 5.🛟 What is a safe way to use a ruler as a lever? (a) flick coins at faces (b) press it gently (c) bend it till it snaps (d) stand on the ruler
6. 6.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
7. 7.🧺 Do we need a round pencil for the ruler lever? (a) not needed (b) needed
8. 8.🛟 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
9. 9.True or false: coins of one kind is needed for the ruler lever. (a) False (b) True
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) which side goes down (b) the same ruler (c) distance from the pencil (d) the number of coins
11. 11.🧺 Do we need a magnet for the ruler lever? (a) not needed (b) needed
12. 12.🧺 Do we need coins of one kind for the ruler lever? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a battery cell (c) a flat table (d) a round pencil
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.⚖️ 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 keep it the same (c) we measure it
16. 16.🧺 Which of these is needed for the ruler lever? (a) a battery cell (b) turmeric powder (c) a mirror (d) a round pencil
17. 17.True or false: a flagpole uses a pulley. (a) False (b) True
18. 18.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) coins of one kind (c) turmeric powder (d) a 30 cm ruler
19. 19.🧺 Which of these is needed for the ruler lever? (a) a magnet (b) coins of one kind (c) a battery cell (d) a mirror
20. 20.⚙️ Which simple machine is a well pulley? (a) a wheel and axle (b) a lever (c) a pulley (d) an inclined plane
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) which side goes down (c) the kind of coins
22. 22.⚙️ Which of these is a lever? (a) a sloping road (b) a crowbar (c) a well pulley (d) a slide
23. 23.True or false: coins of one kind is not needed for the ruler lever. (a) False (b) True
24. 24.⚙️ Which simple machine is a sloping road? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
25. 25.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a balloon (c) coins of one kind (d) a 30 cm ruler
26. 26.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a well pulley (c) a bottle opener (d) a slide
27. 27.🧺 Do we need a 30 cm ruler for the ruler lever? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a 30 cm ruler (c) a battery cell (d) coins of one kind
29. 29.⚖️ 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 kind of coins (b) which side goes down (c) the number of coins (d) where the pencil is
30. 30.🧺 Do we need a mirror for the ruler lever? (a) needed (b) not needed
31. 31.True or false: a magnet is needed for the ruler lever. (a) True (b) False
32. 32.⚙️ Which simple machine is a flagpole? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
33. 33.⚙️ Which of these is a wheel and axle? (a) a crane (b) a slide (c) a steering wheel (d) a sloping road
34. 34.True or false: a steering wheel is a wheel and axle. (a) False (b) True
35. 35.True or false: turmeric powder is needed for the ruler lever. (a) True (b) False
36. 36.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) coins of one kind (c) a 30 cm ruler (d) a balloon
37. 37.True or false: a ramp is a lever. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) yeast (b) a 30 cm ruler (c) a flat table (d) a round pencil
40. 40.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a well pulley (d) a spoon lifting a lid

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