Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 16 · 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 not needed for the ruler lever? (a) a balloon (b) a round pencil (c) a flat table (d) coins of one kind
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ A ruler balances on a pencil at its middle. You place 6 coins 2 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?
4. 4.🧺 Do we need a round pencil for the ruler lever? (a) needed (b) not needed
5. 5.⚖️ A ruler balances on a pencil at its middle. You place 1 coin 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?
6. 6.True or false: a crowbar is a lever. (a) True (b) False
7. 7.🧺 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 balloon (d) a round pencil
8. 8.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
9. 9.🧺 Do we need a balloon for the ruler lever? (a) needed (b) not needed
10. 10.🔮 Predict: you move the pencil (fulcrum) nearer the coins you want to lift. Lifting gets ___. (a) harder (b) easier (c) the same (d) impossible
11. 11.🧺 Do we need yeast for the ruler lever? (a) not needed (b) needed
12. 12.True or false: a battery cell is needed for the ruler lever. (a) True (b) False
13. 13.🧺 Do we need coins of one kind for the ruler lever? (a) needed (b) not needed
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) both go up (b) the left side (c) neither, it balances (d) the right side
15. 15.🧺 Do we need a flat table for the ruler lever? (a) needed (b) not needed
16. 16.⚙️ Which simple machine is a bottle opener? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
17. 17.⚖️ 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) False (b) True
18. 18.⚙️ Which of these is a lever? (a) a tap handle (b) a slide (c) a bottle opener (d) a ramp
19. 19.🧺 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 mirror
20. 20.True or false: a crane is an inclined plane. (a) False (b) True
21. 21.🧺 Which of these is needed for the ruler lever? (a) a 30 cm ruler (b) a mirror (c) a balloon (d) turmeric powder
22. 22.⚖️ A ruler balances on a pencil at its middle. You place 5 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?
23. 23.⚙️ Which of these is a lever? (a) a see-saw (b) a steering wheel (c) a ramp (d) a tap handle
24. 24.⚖️ 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 kind of coins (b) the number of coins (c) the same ruler (d) distance from the pencil
25. 25.⚙️ Which of these uses a pulley? (a) a bottle opener (b) a sloping road (c) a spoon lifting a lid (d) a crane
26. 26.⚖️ 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 keep it the same (c) we measure it
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 keep it the same (c) we change it
28. 28.⚖️ 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) where the pencil is (c) distance from the pencil
29. 29.🧺 Which of these is not needed for the ruler lever? (a) a magnet (b) a round pencil (c) a 30 cm ruler (d) a flat table
30. 30.⚙️ Which of these is a wheel and axle? (a) a ramp (b) a flagpole (c) a tap handle (d) a well pulley
31. 31.True or false: a flat table is needed for the ruler lever. (a) True (b) False
32. 32.🧺 Do we need a 30 cm ruler for the ruler lever? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.True or false: coins of one kind is needed for the ruler lever. (a) True (b) False
36. 36.⚖️ A ruler balances on a pencil at its middle. You place 3 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?
37. 37.True or false: a ramp is a lever. (a) True (b) False
38. 38.⚖️ What is the turning point of a lever called? (a) the axle (b) the fulcrum (c) the load (d) the effort
39. 39.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a bottle opener (c) a tap handle (d) a sloping road
40. 40.⚖️ 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 number of coins (c) where the pencil is (d) distance from the pencil

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