Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 573 · 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.🧺 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
2. 2.⚖️ 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
3. 3.⚖️ 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) which side goes down (c) distance from the pencil
4. 4.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a flat table (b) a balloon (c) a round pencil (d) coins of one kind
5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
6. 6.🧺 Do we need a flat table for the ruler lever? (a) not needed (b) needed
7. 7.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) the same (b) harder (c) easier (d) impossible
8. 8.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is what we measure? (a) distance from the pencil (b) the same ruler (c) the kind of coins (d) which side goes down
9. 9.True or false: a slide is an inclined plane. (a) True (b) False
10. 10.⚙️ Which simple machine is a tap handle? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
11. 11.⚙️ Which simple machine is a crowbar? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
12. 12.🧺 Which of these is not needed for the ruler lever? (a) a 30 cm ruler (b) a round pencil (c) yeast (d) coins of one kind
13. 13.⚖️ A ruler balances on a pencil at its middle. You place 6 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?
14. 14.⚖️ 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 number of coins (b) where the pencil is (c) which side goes down (d) distance from the pencil
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 keep it the same (b) we change it (c) we measure it
16. 16.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a ramp (c) a bottle opener (d) a doorknob
17. 17.⚙️ Which simple machine is a spoon lifting a lid? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
18. 18.⚖️ 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
19. 19.🧺 Do we need coins of one kind for the ruler lever? (a) needed (b) not needed
20. 20.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
21. 21.⚙️ Which simple machine is a doorknob? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
22. 22.🔮 Predict: 2 coins sit 5 cm left of the pencil and 2 coins sit 10 cm right of it. Which side goes down? (a) both go up (b) the right side (c) neither, it balances (d) the left side
23. 23.⚖️ What is the turning point of a lever called? (a) the effort (b) the axle (c) the load (d) the fulcrum
24. 24.🧺 Do we need a battery cell for the ruler lever? (a) needed (b) not needed
25. 25.⚖️ A ruler balances on a pencil at its middle. You place 5 coins 4 cm to the left of the pencil. How many coins must you place 10 cm to the right to balance it?
26. 26.⚖️ 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
27. 27.True or false: a see-saw is a lever. (a) True (b) False
28. 28.⚖️ 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 2 cm to the right to balance it?
29. 29.🧺 Do we need turmeric powder for the ruler lever? (a) needed (b) not needed
30. 30.⚙️ Which of these is an inclined plane? (a) a slide (b) a see-saw (c) a tap handle (d) a crane
31. 31.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) which side goes down (b) the kind of coins (c) distance from the pencil
32. 32.⚙️ Which of these uses a pulley? (a) a see-saw (b) a doorknob (c) a sloping road (d) a flagpole
33. 33.⚙️ Which of these is a lever? (a) a tap handle (b) a slide (c) a ramp (d) a see-saw
34. 34.⚖️ 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
35. 35.⚖️ 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?
36. 36.🧺 Do we need yeast for the ruler lever? (a) not needed (b) needed
37. 37.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a well pulley (c) a doorknob (d) a see-saw
38. 38.🧺 Which of these is not needed for the ruler lever? (a) a battery cell (b) a round pencil (c) a flat table (d) a 30 cm ruler
39. 39.🧺 Which of these is needed for the ruler lever? (a) a battery cell (b) a mirror (c) a magnet (d) a round pencil
40. 40.🧺 Which of these is not needed for the ruler lever? (a) a magnet (b) a 30 cm ruler (c) a round pencil (d) a flat table

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