Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 57 · 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.⚙️ Which of these is a wheel and axle? (a) a crane (b) a doorknob (c) a see-saw (d) a well pulley
2. 2.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.True or false: a see-saw is an inclined plane. (a) False (b) True
5. 5.⚙️ Which of these uses a pulley? (a) a steering wheel (b) a tap handle (c) a flagpole (d) a spoon lifting a lid
6. 6.🧺 Which of these is needed for the ruler lever? (a) a magnet (b) a flat table (c) turmeric powder (d) a battery cell
7. 7.⚖️ Coins on the two sides balance when coins × distance is ___. (a) bigger on the left (b) always 10 (c) zero (d) equal on both sides
8. 8.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is the one thing we change. (a) True (b) False
9. 9.⚙️ Which of these is a lever? (a) a flagpole (b) a sloping road (c) a bottle opener (d) a ramp
10. 10.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) coins of one kind (c) a balloon (d) a 30 cm ruler
11. 11.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) a balloon (c) a 30 cm ruler (d) coins of one kind
12. 12.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) where the pencil is (b) distance from the pencil (c) which side goes down
13. 13.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a round pencil (b) coins of one kind (c) a 30 cm ruler (d) a mirror
14. 14.🧺 Which of these is needed for the ruler lever? (a) yeast (b) turmeric powder (c) a battery cell (d) a 30 cm ruler
15. 15.⚖️ 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
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.⚖️ A ruler balances on a pencil at its middle. You place 5 coins 6 cm to the left of the pencil. How many coins must you place 10 cm to the right to balance it?
18. 18.🧺 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 round pencil (d) a battery cell
19. 19.⚖️ On a see-saw, how can a light child balance a heavier child? (a) jump up and down (b) sit on the middle (c) sit farther from middle (d) sit closer to middle
20. 20.🧺 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 magnet
21. 21.True or false: a steering wheel is a wheel and axle. (a) True (b) False
22. 22.🧺 Do we need a balloon for the ruler lever? (a) needed (b) not needed
23. 23.🧺 Do we need coins of one kind for the ruler lever? (a) needed (b) not needed
24. 24.🛟 Why should coins be kept away from very small children? (a) they are too shiny (b) they may swallow them (c) they are too cold (d) they are magnetic
25. 25.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
26. 26.⚖️ 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) the number of coins (c) which side goes down (d) distance from the pencil
27. 27.⚖️ A ruler balances on a pencil at its middle. You place 3 coins 4 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?
28. 28.True or false: coins of one kind is not needed for the ruler lever. (a) False (b) True
29. 29.🧺 Which of these is needed for the ruler lever? (a) a mirror (b) a balloon (c) a round pencil (d) a battery cell
30. 30.True or false: a round pencil is needed for the ruler lever. (a) False (b) True
31. 31.⚙️ Which simple machine is a steering wheel? (a) a lever (b) an inclined plane (c) a wheel and axle (d) a pulley
32. 32.⚖️ A ruler balances on a pencil at its middle. You place 6 coins 12 cm to the left of the pencil. How many coins must you place 12 cm to the right to balance it?
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need a magnet for the ruler lever? (a) not needed (b) needed
35. 35.⚖️ 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 spoon is hot (d) the lid gets softer
36. 36.True or false: a ramp is a lever. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the ruler lever. (a) False (b) True
38. 38.⚖️ 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) distance from the pencil (c) where the pencil is (d) the kind of coins
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.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) coins of one kind (c) a magnet (d) a 30 cm ruler

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