Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 349 · 40 questions

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.

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

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