Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 226 · 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.True or false: a magnet is not needed for the ruler lever. (a) False (b) True
2. 2.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a balloon (b) coins of one kind (c) a flat table (d) a round pencil
3. 3.🧺 Which of these is needed for the ruler lever? (a) yeast (b) a magnet (c) a 30 cm ruler (d) a battery cell
4. 4.⚖️ 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 number of coins (c) the kind of coins (d) which side goes down
5. 5.⚖️ 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
6. 6.⚖️ A ruler balances on a pencil at its middle. You place 5 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?
7. 7.🛟 Why should coins be kept away from very small children? (a) they may swallow them (b) they are too shiny (c) they are too cold (d) they are magnetic
8. 8.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a magnet (b) a round pencil (c) coins of one kind (d) a 30 cm ruler
9. 9.True or false: a sloping road is a wheel and axle. (a) False (b) True
10. 10.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
11. 11.🧺 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
12. 12.🔮 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 right side (b) both go up (c) neither, it balances (d) the left side
13. 13.🧺 Which of these is needed for the ruler lever? (a) a balloon (b) a magnet (c) coins of one kind (d) a mirror
14. 14.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) coins of one kind (b) a 30 cm ruler (c) a mirror (d) a flat table
15. 15.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: where the pencil is is kept the same. (a) True (b) False
16. 16.⚖️ 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) which side goes down (b) the kind of coins (c) distance from the pencil (d) the number of coins
17. 17.True or false: a crowbar is a wheel and axle. (a) False (b) True
18. 18.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a tap handle (c) a sloping road (d) a spoon lifting a lid
19. 19.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: where the pencil is is the one thing we change. (a) True (b) False
20. 20.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: which side goes down is kept the same. (a) True (b) False
21. 21.⚖️ A ruler balances on a pencil at its middle. You place 6 coins 5 cm to the left of the pencil and 5 coins on the right. How many cm from the pencil must the right-hand coins go to balance it?
22. 22.⚙️ Which of these is an inclined plane? (a) a crane (b) a ramp (c) a spoon lifting a lid (d) a bottle opener
23. 23.🧺 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) turmeric powder
24. 24.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) a round pencil (c) a 30 cm ruler (d) a balloon
25. 25.🧺 Do we need a balloon for the ruler lever? (a) not needed (b) needed
26. 26.⚖️ What is the turning point of a lever called? (a) the load (b) the axle (c) the effort (d) the fulcrum
27. 27.True or false: a flat table is not needed for the ruler lever. (a) False (b) True
28. 28.True or false: a crane is a wheel and axle. (a) False (b) True
29. 29.🧺 Which of these is not needed for the ruler lever? (a) a flat table (b) a 30 cm ruler (c) a mirror (d) coins of one kind
30. 30.🧺 Which of these is needed for the ruler lever? (a) a mirror (b) turmeric powder (c) a balloon (d) a round pencil
31. 31.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the number of coins is the one thing we change. (a) False (b) True
32. 32.⚙️ Which simple machine is a flagpole? (a) an inclined plane (b) a pulley (c) a wheel and axle (d) a lever
33. 33.⚙️ Which simple machine is a well pulley? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
34. 34.⚖️ 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
35. 35.True or false: a mirror is not needed for the ruler lever. (a) False (b) True
36. 36.True or false: a steering wheel is a wheel and axle. (a) False (b) True
37. 37.🧺 Do we need a 30 cm ruler for the ruler lever? (a) not needed (b) needed
38. 38.⚙️ Which of these is a wheel and axle? (a) a doorknob (b) a crane (c) a well pulley (d) a flagpole
39. 39.🧺 Do we need coins of one kind for the ruler lever? (a) needed (b) not needed
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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