Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 42 · 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.📘 What does “dense” mean? (a) very hot (b) very thin (c) heavy for its size (d) very colourful
2. 2.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a magnet (d) water with food colour
4. 4.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
5. 5.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) on top of the oil (c) in the honey layer (d) in the water layer
6. 6.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
7. 7.🔍 Which is the odd one out? (a) cooking oil (b) honey (c) an ice cube (d) air
8. 8.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
9. 9.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) coloured water (d) cooking oil
10. 10.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) a cork (d) very salty water
11. 11.🔍 Which is the odd one out? (a) a glass marble (b) cooking oil (c) a coin (d) a pebble
12. 12.⚖️ 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
13. 13.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🍯 Which of these is less dense than water? (a) air (b) a glass marble (c) a coin (d) very salty water
16. 16.True or false: yeast is needed for the density tower. (a) False (b) True
17. 17.True or false: an ice cube is less dense than water. (a) True (b) False
18. 18.🍯 Which of these is denser than water? (a) air (b) cooking oil (c) a pebble (d) a ping-pong ball
19. 19.🍯 Which of these is less dense than water? (a) very salty water (b) a coin (c) a glass marble (d) a ping-pong ball
20. 20.⚖️ 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) True (b) False
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 what we measure? (a) the order of the layers (b) the same glass (c) the order of pouring (d) how much of each liquid
22. 22.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is less dense (d) oil is hot
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) do not lick the spoon (c) pour it on the floor (d) taste each layer
24. 24.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
25. 25.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
26. 26.True or false: honey is not needed for the density tower. (a) True (b) False
27. 27.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a mirror (c) cooking oil (d) honey
28. 28.True or false: air is denser than water. (a) True (b) False
29. 29.🛟 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
30. 30.⚖️ 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) False (b) True
31. 31.True or false: turmeric powder is not needed for the density tower. (a) True (b) False
32. 32.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) an ice cube (b) air (c) a pebble (d) cooking oil
34. 34.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) a balloon (d) honey
35. 35.⚖️ 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) how much of each liquid (d) the order of the layers
36. 36.⚖️ 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 kept the same. (a) False (b) True
37. 37.🍯 Which of these is denser than water? (a) an ice cube (b) a cork (c) a ping-pong ball (d) very salty water
38. 38.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) honey (d) a battery cell
39. 39.⚖️ 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
40. 40.🔮 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 mix for ever (d) they separate again

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