Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 198 · 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 hot (b) oil is heavier (c) oil is sticky (d) oil is less dense
2. 2.🔍 Which is the odd one out? (a) air (b) an ice cube (c) a ping-pong ball (d) honey
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 pouring is the one thing we change. (a) True (b) False
4. 4.⚖️ 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
5. 5.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) under the honey (d) on top of the oil
6. 6.⚖️ 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 three liquids (c) the order of the layers (d) the same glass
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.⚖️ 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 the layers (c) the same glass (d) the order of pouring
9. 9.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) spilled oil is slippery (c) oil turns into honey (d) oil makes it rain
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 order of the layers”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) yeast (d) water with food colour
12. 12.⚖️ 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 what we measure. (a) False (b) True
13. 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) a balloon (d) a spoon
14. 14.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the densest (d) it is the coldest
15. 15.⚖️ 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 the one thing we change. (a) True (b) False
16. 16.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
17. 17.True or false: a magnet is needed for the density tower. (a) True (b) False
18. 18.🍯 Which of these is denser than water? (a) very salty water (b) cooking oil (c) air (d) a cork
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a spoon (d) a mirror
20. 20.True or false: very salty water is less dense than water. (a) False (b) True
21. 21.🍯 Which of these is less dense than water? (a) a glass marble (b) cooking oil (c) honey (d) very salty water
22. 22.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
23. 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) cooking oil (c) water with food colour (d) a battery cell
24. 24.🍯 Which of these is denser than water? (a) air (b) a pebble (c) cooking oil (d) a ping-pong ball
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) water with food colour (c) a tall clear glass (d) turmeric powder
26. 26.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
27. 27.🔮 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
28. 28.True or false: a balloon is needed for the density tower. (a) False (b) True
29. 29.⚖️ 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 the layers (b) the order of pouring (c) how much of each liquid
30. 30.🧺 Do we need honey for the density tower? (a) not needed (b) needed
31. 31.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) three separate layers (d) the glass gets hot
32. 32.True or false: a spoon is needed for the density tower. (a) False (b) True
33. 33.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a cork (c) cooking oil (d) a coin
34. 34.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
35. 35.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
36. 36.🧺 Which of these is needed for the density tower? (a) a mirror (b) a tall clear glass (c) yeast (d) a magnet
37. 37.🔮 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 separate again (d) they turn to honey
38. 38.⚖️ 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
39. 39.True or false: cooking oil is needed for the density tower. (a) False (b) True
40. 40.⚖️ 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 the layers (b) the order of pouring (c) the same glass

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