Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 96 · 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.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) harder (b) easier (c) impossible (d) the same
2. 2.🛟 What is a safe way to use a ruler as a lever? (a) bend it till it snaps (b) press it gently (c) stand on the ruler (d) flick coins at faces
3. 3.🧺 Do we need a 30 cm ruler for the ruler lever? (a) needed (b) not needed
4. 4.🛟 Why should coins be kept away from very small children? (a) they may swallow them (b) they are too cold (c) they are magnetic (d) they are too shiny
5. 5.🧺 Do we need coins of one kind for the ruler lever? (a) not needed (b) needed
6. 6.⚙️ Which of these is an inclined plane? (a) a see-saw (b) a spoon lifting a lid (c) a bottle opener (d) a slide
7. 7.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a mirror (c) coins of one kind (d) yeast
8. 8.⚖️ 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
9. 9.🧺 Do we need a balloon for the ruler lever? (a) not needed (b) needed
10. 10.⚙️ Which of these is a lever? (a) a tap handle (b) a sloping road (c) a see-saw (d) a steering wheel
11. 11.True or false: turmeric powder is not needed for the ruler lever. (a) True (b) False
12. 12.⚙️ Which simple machine is a ramp? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
13. 13.True or false: yeast is needed for the ruler lever. (a) True (b) False
14. 14.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) the same ruler (b) distance from the pencil (c) which side goes down
15. 15.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) the spoon is magnetic (b) a lever boosts your push (c) the lid gets softer (d) the spoon is hot
16. 16.True or false: turmeric powder is needed for the ruler lever. (a) True (b) False
17. 17.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a magnet (c) turmeric powder (d) a round pencil
18. 18.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
19. 19.⚖️ 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) the number of coins (d) distance from the pencil
20. 20.⚖️ Coins on the two sides balance when coins × distance is ___. (a) zero (b) always 10 (c) equal on both sides (d) bigger on the left
21. 21.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is kept the same. (a) False (b) True
22. 22.🧺 Do we need a mirror for the ruler lever? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) coins of one kind (c) a round pencil (d) a battery cell
24. 24.⚖️ A ruler balances on a pencil at its middle. You place 2 coins 1 cm to the left of the pencil and 1 coin on the right. How many cm from the pencil must the right-hand coins go to balance it?
25. 25.⚙️ Which of these is a lever? (a) a bottle opener (b) a tap handle (c) a sloping road (d) a steering wheel
26. 26.⚙️ Which of these is an inclined plane? (a) a ramp (b) a bottle opener (c) a tap handle (d) a crowbar
27. 27.⚖️ 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 change it (c) we keep it the same
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 mirror (d) coins of one kind
29. 29.🧺 Do we need a flat table for the ruler lever? (a) needed (b) not needed
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.True or false: a steering wheel uses a pulley. (a) False (b) True
32. 32.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a round pencil (c) coins of one kind (d) a mirror
33. 33.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
34. 34.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: distance from the pencil is kept the same. (a) False (b) True
35. 35.True or false: a flat table is needed for the ruler lever. (a) True (b) False
36. 36.True or false: coins of one kind is needed for the ruler lever. (a) True (b) False
37. 37.⚖️ A ruler balances on a pencil at its middle. You place 1 coin 1 cm to the left of the pencil. How many coins must you place 1 cm to the right to balance it?
38. 38.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) a 30 cm ruler (c) coins of one kind (d) a magnet
39. 39.⚖️ A ruler balances on a pencil at its middle. You place 2 coins 6 cm to the left of the pencil. How many coins must you place 2 cm to the right to balance it?
40. 40.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids