Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 538 · 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.True or false: a sloping road is a lever. (a) True (b) False
2. 2.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) which side goes down (b) the same ruler (c) the number of coins (d) distance from the pencil
3. 3.🧺 Do we need a battery cell for the ruler lever? (a) not needed (b) needed
4. 4.🔮 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) both go up (c) the right side (d) the left side
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Do we need a balloon for the ruler lever? (a) not needed (b) needed
7. 7.⚙️ Which of these uses a pulley? (a) a slide (b) a crane (c) a spoon lifting a lid (d) a steering wheel
8. 8.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) impossible (b) harder (c) the same (d) easier
9. 9.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a 30 cm ruler (c) turmeric powder (d) a round pencil
10. 10.⚙️ Which simple machine is a well pulley? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
11. 11.⚖️ 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 same ruler (b) distance from the pencil (c) which side goes down (d) where the pencil is
12. 12.⚙️ Which simple machine is a crowbar? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
13. 13.True or false: a flat table is not needed for the ruler lever. (a) True (b) False
14. 14.🛟 What is a safe way to use a ruler as a lever? (a) bend it till it snaps (b) flick coins at faces (c) press it gently (d) stand on the ruler
15. 15.True or false: a battery cell is not needed for the ruler lever. (a) False (b) True
16. 16.⚖️ 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
17. 17.⚖️ What is the turning point of a lever called? (a) the fulcrum (b) the load (c) the axle (d) the effort
18. 18.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a bottle opener (c) a sloping road (d) a crane
19. 19.🧺 Do we need yeast for the ruler lever? (a) not needed (b) needed
20. 20.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
21. 21.⚙️ Which simple machine is a sloping road? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
22. 22.🧺 Which of these is not needed for the ruler lever? (a) coins of one kind (b) a round pencil (c) a balloon (d) a 30 cm ruler
23. 23.True or false: a crowbar is an inclined plane. (a) True (b) False
24. 24.⚙️ Which of these is a lever? (a) a slide (b) a flagpole (c) a steering wheel (d) a see-saw
25. 25.⚖️ 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
26. 26.⚖️ On a see-saw, how can a light child balance a heavier child? (a) sit on the middle (b) sit closer to middle (c) jump up and down (d) sit farther from middle
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) a magnet (c) a flat table (d) a 30 cm ruler
29. 29.⚖️ 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
30. 30.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a pulley (d) a wheel and axle
31. 31.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “the same ruler”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.True or false: a bottle opener is an inclined plane. (a) False (b) True
33. 33.⚙️ Which simple machine is a crane? (a) a pulley (b) an inclined plane (c) a lever (d) a wheel and axle
34. 34.True or false: a slide is a wheel and axle. (a) True (b) False
35. 35.True or false: a flagpole uses a pulley. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the ruler lever? (a) a mirror (b) coins of one kind (c) yeast (d) a battery cell
38. 38.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) yeast (c) a flat table (d) a round pencil
39. 39.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the kind of coins is kept the same. (a) False (b) True
40. 40.True or false: a tap handle is an inclined plane. (a) False (b) True

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