Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 743 · 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 the one thing we change? (a) distance from the pencil (b) which side goes down (c) the number of coins (d) where the pencil is
2. 2.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
3. 3.⚙️ Which simple machine is a see-saw? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
4. 4.⚖️ A ruler balances on a pencil at its middle. You place 2 coins 2 cm to the left of the pencil. How many coins must you place 2 cm to the right to balance it?
5. 5.True or false: a tap handle is an inclined plane. (a) True (b) False
6. 6.⚖️ 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 same ruler (b) the number of coins (c) which side goes down (d) the kind of coins
7. 7.🛟 Why should coins be kept away from very small children? (a) they are magnetic (b) they may swallow them (c) they are too shiny (d) they are too cold
8. 8.⚙️ Which of these is a lever? (a) a doorknob (b) a see-saw (c) a ramp (d) a crane
9. 9.🧺 Do we need a mirror for the ruler lever? (a) not needed (b) needed
10. 10.🧺 Do we need yeast for the ruler lever? (a) not needed (b) needed
11. 11.⚖️ Why is it easier to open a tin lid with the handle of a spoon? (a) the lid gets softer (b) the spoon is magnetic (c) a lever boosts your push (d) the spoon is hot
12. 12.True or false: a magnet is needed for the ruler lever. (a) True (b) False
13. 13.⚙️ Which of these is a lever? (a) a doorknob (b) a spoon lifting a lid (c) a crane (d) a sloping road
14. 14.🔮 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) the right side (d) both go up
15. 15.⚖️ 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
16. 16.⚖️ A ruler balances on a pencil at its middle. You place 5 coins 6 cm to the left of the pencil and 6 coins on the right. How many cm from the pencil must the right-hand coins go to balance it?
17. 17.🧺 Do we need a battery cell for the ruler lever? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) a battery cell (c) coins of one kind (d) a 30 cm ruler
20. 20.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a flagpole (c) a spoon lifting a lid (d) a ramp
21. 21.⚖️ 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
22. 22.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is what we measure. (a) True (b) False
23. 23.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) coins of one kind (c) yeast (d) a round pencil
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.⚖️ 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
26. 26.⚖️ On a see-saw, how can a light child balance a heavier child? (a) sit on the middle (b) jump up and down (c) sit closer to middle (d) sit farther from middle
27. 27.⚖️ 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 change it (c) we measure it
28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a mirror (b) a round pencil (c) coins of one kind (d) a flat table
29. 29.⚙️ Which simple machine is a spoon lifting a lid? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
30. 30.🧺 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 battery cell (d) a flat table
31. 31.🧺 Which of these is needed for the ruler lever? (a) a magnet (b) yeast (c) a balloon (d) a 30 cm ruler
32. 32.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a flat table (c) coins of one kind (d) turmeric powder
33. 33.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a flat table (c) a round pencil (d) a magnet
34. 34.🧺 Which of these is needed for the ruler lever? (a) a magnet (b) a round pencil (c) a mirror (d) a balloon
35. 35.True or false: a well pulley is an inclined plane. (a) False (b) True
36. 36.🧺 Do we need a flat table for the ruler lever? (a) needed (b) not needed
37. 37.⚖️ A ruler balances on a pencil at its middle. You place 1 coin 6 cm to the left of the pencil. How many coins must you place 1 cm to the right to balance it?
38. 38.True or false: a 30 cm ruler is needed for the ruler lever. (a) True (b) False
39. 39.🧺 Which of these is not needed for the ruler lever? (a) a round pencil (b) a 30 cm ruler (c) a balloon (d) coins of one kind
40. 40.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a doorknob (c) a flagpole (d) a ramp

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