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Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 550 · 40 questions
TalentJR

What you do (Heaviest for its size sinks): 1. Pour honey slowly into the glass to fill about a quarter. 2. Pour coloured water gently down the side of the glass. 3. Pour the cooking oil gently on top and watch the layers settle. 4. Gently drop in a cork and a coin, see where each stops, and wipe up oil spills.

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  1. 1.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a tall clear glass (c) cooking oil (d) a battery cell
  2. 2.📘 What does “dense” mean? (a) very hot (b) very colourful (c) heavy for its size (d) very thin
  3. 3.🔍 Which is the odd one out? (a) honey (b) a coin (c) a ping-pong ball (d) a pebble
  4. 4.🍯 Which of these is less dense than water? (a) a coin (b) honey (c) very salty water (d) a cork
  5. 5.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) do not lick the spoon (d) pour it on the floor
  6. 6.True or false: yeast is not needed for the density tower. (a) True (b) False
  7. 7.🍯 Which of these is less dense than water? (a) a ping-pong ball (b) honey (c) a coin (d) a pebble
  8. 8.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
  9. 9.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is less dense (c) oil is hot (d) oil is sticky
  10. 10.True or false: a magnet is not needed for the density tower. (a) True (b) False
  11. 11.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the densest (d) it is the stickiest
  12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) yeast (c) a spoon (d) honey
  13. 13.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) False (b) True
  14. 14.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) at the very bottom (c) on top of the oil (d) in the water layer
  15. 15.True or false: a pebble is less dense than water. (a) False (b) True
  16. 16.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) True (b) False
  17. 17.True or false: a battery cell is needed for the density tower. (a) True (b) False
  18. 18.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we measure it (b) we change it (c) we keep it the same
  19. 19.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
  20. 20.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is what we measure? (a) the same three liquids (b) the order of pouring (c) the order of the layers (d) how much of each liquid
  21. 21.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) on top of the oil (c) under the honey (d) in the honey layer
  22. 22.🧺 Which of these is needed for the density tower? (a) yeast (b) a mirror (c) water with food colour (d) turmeric powder
  23. 23.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
  24. 24.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) air (b) honey (c) a glass marble (d) very salty water
  26. 26.True or false: yeast is needed for the density tower. (a) False (b) True
  27. 27.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
  28. 28.🍯 Is an ice cube denser or less dense than water? (a) denser than water (b) less dense than water
  29. 29.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) cooking oil (c) yeast (d) a balloon
  30. 30.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “how much of each liquid”? (a) we change it (b) we measure it (c) we keep it the same
  31. 31.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same three liquids (b) the order of pouring (c) the order of the layers (d) how much of each liquid
  32. 32.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
  33. 33.True or false: a glass marble is denser than water. (a) False (b) True
  34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) True (b) False
  35. 35.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
  36. 36.🍯 Which of these is denser than water? (a) a glass marble (b) cooking oil (c) an ice cube (d) a ping-pong ball
  37. 37.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
  38. 38.🍯 Which of these is less dense than water? (a) air (b) a coin (c) honey (d) a glass marble
  39. 39.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) a mirror (d) cooking oil
  40. 40.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they mix for ever (d) they become solid

Answer key

  1. a battery cell
  2. heavy for its size
  3. a ping-pong ball
  4. a cork
  5. do not lick the spoon
  6. True
  7. a ping-pong ball
  8. True
  9. oil is less dense
  10. True
  11. it is the densest
  12. yeast
  13. True
  14. at the very bottom
  15. False
  16. False
  17. False
  18. we keep it the same
  19. denser than water
  20. the order of the layers
  21. on top of the oil
  22. water with food colour
  23. less dense than water
  24. False
  25. air
  26. False
  27. denser than water
  28. less dense than water
  29. cooking oil
  30. we keep it the same
  31. the order of pouring
  32. needed
  33. True
  34. True
  35. denser than water
  36. a glass marble
  37. spilled oil is slippery
  38. air
  39. a mirror
  40. they separate again

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