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