Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 184 · 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.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is less dense (c) oil is heavier (d) oil is hot
2. 2.🧺 Which of these is needed for the density tower? (a) water with food colour (b) a magnet (c) yeast (d) a battery cell
3. 3.⚖️ 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 order of the layers”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
5. 5.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
6. 6.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they separate again (d) they mix for ever
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a spoon (d) a balloon
8. 8.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
9. 9.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil turns into honey (d) oil attracts magnets
10. 10.⚖️ 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 glass”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.True or false: air is denser than water. (a) True (b) False
12. 12.⚖️ 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 order of pouring (b) the same three liquids (c) the order of the layers
13. 13.True or false: water with food colour is needed for the density tower. (a) False (b) True
14. 14.⚖️ 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 pouring is the one thing we change. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) an ice cube (d) very salty water
16. 16.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
17. 17.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
18. 18.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) a glass marble (d) an ice cube
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) True (b) False
20. 20.🧺 Which of these is needed for the density tower? (a) a balloon (b) a spoon (c) a battery cell (d) a magnet
21. 21.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) an ice cube (d) a glass marble
22. 22.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a balloon (c) cooking oil (d) a battery cell
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) do not lick the spoon (d) pour it on the floor
24. 24.🔍 Which is the odd one out? (a) cooking oil (b) a coin (c) air (d) a ping-pong ball
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) at the very bottom (c) in the water layer (d) in the oil layer
26. 26.🍯 Which of these is denser than water? (a) very salty water (b) a ping-pong ball (c) air (d) cooking oil
27. 27.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a pebble (d) honey
28. 28.⚖️ 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 the layers (b) the order of pouring (c) the same three liquids (d) how much of each liquid
29. 29.⚖️ 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
30. 30.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is yellow (c) it is the stickiest (d) it is the densest
31. 31.True or false: a balloon is needed for the density tower. (a) False (b) True
32. 32.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) three separate layers (c) bubbles of gas (d) the glass gets hot
33. 33.⚖️ 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
34. 34.True or false: yeast is not needed for the density tower. (a) True (b) False
35. 35.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) under the honey (c) on top of the oil (d) in the water layer
36. 36.⚖️ 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 order of pouring (b) the order of the layers (c) the same three liquids (d) the same glass
37. 37.True or false: a glass marble is less dense than water. (a) False (b) True
38. 38.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
39. 39.True or false: a cork is denser than water. (a) False (b) True
40. 40.🔍 Which layer is on top in the honey-water-oil tower? (a) cooking oil (b) the spoon (c) honey (d) coloured water

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