Density Tower Experiment Worksheet
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.
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- 1.🔮 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
- 2.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
- 3.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a mirror (c) a tall clear glass (d) turmeric powder
- 4.True or false: an ice cube is denser than water. (a) True (b) False
- 5.⚖️ 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 what we measure. (a) True (b) False
- 6.⚖️ 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 kept the same. (a) False (b) True
- 7.🍯 Which of these is denser than water? (a) air (b) a glass marble (c) cooking oil (d) an ice cube
- 8.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
- 9.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
- 10.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
- 11.True or false: cooking oil is less dense than water. (a) False (b) True
- 12.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
- 13.🍯 Which of these is less dense than water? (a) very salty water (b) cooking oil (c) a coin (d) a pebble
- 14.True or false: a battery cell is not needed for the density tower. (a) True (b) False
- 15.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
- 16.⚖️ 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 same three liquids (b) the same glass (c) the order of pouring (d) the order of the layers
- 17.📘 What does “dense” mean? (a) heavy for its size (b) very thin (c) very hot (d) very colourful
- 18.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil attracts magnets (c) oil turns into honey (d) oil makes it rain
- 19.🔍 Which is the odd one out? (a) cooking oil (b) a pebble (c) honey (d) a glass marble
- 20.🔍 Which is the odd one out? (a) a cork (b) air (c) honey (d) a ping-pong ball
- 21.True or false: yeast is needed for the density tower. (a) True (b) False
- 22.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) honey (d) a magnet
- 23.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) a balloon (d) cooking oil
- 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
- 25.True or false: a cork is denser than water. (a) True (b) False
- 26.🧺 Which of these is needed for the density tower? (a) a battery cell (b) turmeric powder (c) a spoon (d) a mirror
- 27.True or false: a pebble is less dense than water. (a) False (b) True
- 28.True or false: honey is needed for the density tower. (a) False (b) True
- 29.⚖️ 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
- 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 order of pouring is what we measure. (a) True (b) False
- 31.🧺 Which of these is needed for the density tower? (a) a magnet (b) a mirror (c) a battery cell (d) cooking oil
- 32.🍯 Is honey denser or less dense than water? (a) denser than water (b) less dense than water
- 33.True or false: cooking oil is not needed for the density tower. (a) False (b) True
- 34.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) bubbles of gas (c) three separate layers (d) one mixed colour
- 35.True or false: a magnet is needed for the density tower. (a) False (b) True
- 36.True or false: a spoon is not needed for the density tower. (a) True (b) False
- 37.True or false: a spoon is needed for the density tower. (a) True (b) False
- 38.⚖️ 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
- 39.🍯 Which of these is denser than water? (a) cooking oil (b) air (c) a cork (d) a pebble
- 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) yeast (c) honey (d) water with food colour
Answer key
- they separate again
- less dense than water
- a tall clear glass
- False
- False
- True
- a glass marble
- denser than water
- not needed
- False
- True
- less dense than water
- cooking oil
- True
- do not lick the spoon
- the order of pouring
- heavy for its size
- spilled oil is slippery
- cooking oil
- honey
- False
- honey
- a balloon
- we keep it the same
- False
- a spoon
- False
- True
- True
- False
- cooking oil
- denser than water
- False
- three separate layers
- False
- False
- True
- the same glass
- a pebble
- yeast
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