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Lever Experiment Worksheet

Science experiments lesson 24: Lever with a ruler and coins · Set 599 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ 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 change it (b) we measure it (c) we keep it the same
  2. 2.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? True or false: the same ruler is what we measure. (a) False (b) True
  3. 3.True or false: a magnet is not needed for the ruler lever. (a) True (b) False
  4. 4.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) yeast (b) a 30 cm ruler (c) coins of one kind (d) a round pencil
  5. 5.🧺 Do we need a round pencil for the ruler lever? (a) needed (b) not needed
  6. 6.⚖️ What is the turning point of a lever called? (a) the fulcrum (b) the axle (c) the load (d) the effort
  7. 7.⚖️ 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
  8. 8.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a wheel and axle (c) a pulley (d) a lever
  9. 9.🧺 Do we need a magnet for the ruler lever? (a) needed (b) not needed
  10. 10.True or false: a battery cell is needed for the ruler lever. (a) True (b) False
  11. 11.⚖️ 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) False (b) True
  12. 12.🧺 Do we need a flat table for the ruler lever? (a) not needed (b) needed
  13. 13.⚙️ Which simple machine is a flagpole? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
  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) the right side (c) neither, it balances (d) both go up
  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 change it (b) we measure it (c) we keep it the same
  16. 16.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) the number of coins (b) which side goes down (c) distance from the pencil
  17. 17.⚖️ 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) False (b) True
  18. 18.⚖️ 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 same ruler (b) the kind of coins (c) distance from the pencil (d) where the pencil is
  19. 19.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? Which of these is kept the same? (a) the kind of coins (b) distance from the pencil (c) which side goes down
  20. 20.⚖️ Fair test — does moving the coins farther from the pencil make that side go down more? What do we do with “where the pencil is”? (a) we keep it the same (b) we change it (c) we measure it
  21. 21.⚖️ 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 number of coins (b) the same ruler (c) where the pencil is (d) which side goes down
  22. 22.🛟 What is a safe way to use a ruler as a lever? (a) press it gently (b) stand on the ruler (c) bend it till it snaps (d) flick coins at faces
  23. 23.⚙️ Which simple machine is a slide? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
  24. 24.🛟 Why should coins be kept away from very small children? (a) they are magnetic (b) they are too shiny (c) they are too cold (d) they may swallow them
  25. 25.⚙️ Which of these is a wheel and axle? (a) a see-saw (b) a spoon lifting a lid (c) a steering wheel (d) a crowbar
  26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
  27. 27.🧺 Which of these is not needed for the ruler lever? (a) a magnet (b) coins of one kind (c) a round pencil (d) a flat table
  28. 28.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) a round pencil (c) a battery cell (d) coins of one kind
  29. 29.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) turmeric powder (b) a 30 cm ruler (c) a flat table (d) a round pencil
  30. 30.True or false: a battery cell is not needed for the ruler lever. (a) True (b) False
  31. 31.⚙️ Which of these is an inclined plane? (a) a steering wheel (b) a crane (c) a ramp (d) a spoon lifting a lid
  32. 32.⚖️ 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 keep it the same (c) we measure it
  33. 33.⚖️ 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
  34. 34.🧺 Which of these is needed for the ruler lever? (a) a magnet (b) yeast (c) coins of one kind (d) turmeric powder
  35. 35.⚙️ Which simple machine is a crowbar? (a) a pulley (b) a lever (c) an inclined plane (d) a wheel and axle
  36. 36.True or false: a balloon is needed for the ruler lever. (a) True (b) False
  37. 37.🧺 Three of these are needed for the ruler lever. Which one is NOT needed? (a) a 30 cm ruler (b) a round pencil (c) a balloon (d) a flat table
  38. 38.🧺 Do we need yeast for the ruler lever? (a) needed (b) not needed
  39. 39.⚙️ Which simple machine is a well pulley? (a) a lever (b) a pulley (c) a wheel and axle (d) an inclined plane
  40. 40.⚖️ 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

Answer key

  1. we measure it
  2. False
  3. True
  4. yeast
  5. needed
  6. the fulcrum
  7. sit farther from middle
  8. a lever
  9. not needed
  10. False
  11. True
  12. needed
  13. a pulley
  14. the right side
  15. we keep it the same
  16. the number of coins
  17. False
  18. distance from the pencil
  19. the kind of coins
  20. we keep it the same
  21. which side goes down
  22. press it gently
  23. an inclined plane
  24. they may swallow them
  25. a steering wheel
  26. we change it
  27. a magnet
  28. a battery cell
  29. turmeric powder
  30. True
  31. a ramp
  32. we keep it the same
  33. True
  34. coins of one kind
  35. a lever
  36. False
  37. a balloon
  38. not needed
  39. a pulley
  40. we keep it the same

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