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