Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 910 · 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.🍯 Which of these is less dense than water? (a) a pebble (b) very salty water (c) air (d) a coin
2. 2.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) on top of the oil (c) under the honey (d) in the water layer
3. 3.🧺 Which of these is needed for the density tower? (a) yeast (b) cooking oil (c) a balloon (d) a mirror
4. 4.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
5. 5.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the densest (c) it is the stickiest (d) it is the coldest
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.⚖️ 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
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 kept the same? (a) the order of the layers (b) the order of pouring (c) the same three liquids
9. 9.⚖️ 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 glass (d) how much of each liquid
10. 10.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a battery cell (c) a tall clear glass (d) honey
11. 11.True or false: a cork is denser than water. (a) True (b) False
12. 12.True or false: very salty water is less dense than water. (a) True (b) False
13. 13.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
14. 14.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
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: the same glass is what we measure. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a glass marble (b) very salty water (c) a pebble (d) a ping-pong ball
17. 17.⚖️ 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 order of the layers (c) the same glass
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 order of pouring”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
20. 20.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) one mixed colour (c) three separate layers (d) bubbles of gas
21. 21.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) honey (d) a balloon
22. 22.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they separate again (c) they become solid (d) they turn to honey
23. 23.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is sticky (c) oil is heavier (d) oil is hot
24. 24.⚖️ 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 what we measure. (a) True (b) False
25. 25.⚖️ 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 keep it the same (c) we measure it
26. 26.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) a spoon (d) yeast
27. 27.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
28. 28.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
29. 29.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a magnet (d) honey
30. 30.True or false: a mirror is not needed for the density tower. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) honey (b) an ice cube (c) a glass marble (d) very salty water
32. 32.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) honey (c) cooking oil (d) coloured water
33. 33.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
34. 34.True or false: honey is less dense than water. (a) True (b) False
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.🧺 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) yeast (d) cooking oil
37. 37.🍯 Which of these is less dense than water? (a) a pebble (b) cooking oil (c) a coin (d) a glass marble
38. 38.🧺 Do we need honey for the density tower? (a) needed (b) not needed
39. 39.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) cooking oil (d) honey
40. 40.True or false: honey is needed for the density tower. (a) True (b) False

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