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.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is heavier (c) oil is hot (d) oil is less dense
- 2.🧺 Do we need a battery cell for the density tower? (a) not needed (b) needed
- 3.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
- 4.🍯 Which of these is denser than water? (a) a ping-pong ball (b) cooking oil (c) honey (d) an ice cube
- 5.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
- 6.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) honey (c) cooking oil (d) the spoon
- 7.🧺 Which of these is needed for the density tower? (a) a battery cell (b) yeast (c) turmeric powder (d) cooking oil
- 8.🔍 Which is the odd one out? (a) very salty water (b) a cork (c) a pebble (d) honey
- 9.True or false: very salty water is less dense than water. (a) True (b) False
- 10.⚖️ 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 the layers is the one thing we change. (a) True (b) False
- 11.🛟 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
- 12.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
- 13.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) honey (d) an ice cube
- 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 change it (c) we keep it the same
- 15.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is yellow (c) it is the coldest (d) it is the stickiest
- 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 what we measure? (a) the order of the layers (b) how much of each liquid (c) the order of pouring (d) the same glass
- 17.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
- 18.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
- 19.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) a coin (d) air
- 20.🍯 Which of these is denser than water? (a) a cork (b) a ping-pong ball (c) a glass marble (d) an ice cube
- 21.⚖️ 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 what we measure. (a) True (b) False
- 22.True or false: a glass marble is less dense than water. (a) True (b) False
- 23.True or false: a pebble is denser than water. (a) False (b) True
- 24.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the water layer (d) in the honey layer
- 25.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) a battery cell (d) water with food colour
- 26.⚖️ 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) how much of each liquid (c) the order of the layers
- 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a balloon (d) water with food colour
- 28.🛟 Why should we wipe up spilled oil at once? (a) oil makes it rain (b) spilled oil is slippery (c) oil turns into honey (d) oil attracts magnets
- 29.📘 What does “dense” mean? (a) very thin (b) very colourful (c) heavy for its size (d) very hot
- 30.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
- 31.🧺 Which of these is needed for the density tower? (a) a balloon (b) a mirror (c) a spoon (d) turmeric powder
- 32.True or false: a tall clear glass 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 glass is kept the same. (a) False (b) True
- 34.True or false: a magnet is not needed for the density tower. (a) False (b) True
- 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) how much of each liquid (b) the order of pouring (c) the same three liquids (d) the order of the layers
- 36.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a spoon (c) a magnet (d) honey
- 37.True or false: a tall clear glass 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? True or false: the order of pouring is what we measure. (a) True (b) False
- 39.⚖️ 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
- 40.🧺 Do we need honey for the density tower? (a) needed (b) not needed
Answer key
- oil is less dense
- not needed
- denser than water
- honey
- not needed
- cooking oil
- cooking oil
- a cork
- False
- False
- do not lick the spoon
- needed
- an ice cube
- we measure it
- it is the densest
- the order of the layers
- needed
- less dense than water
- a coin
- a glass marble
- False
- False
- True
- on top of the oil
- a battery cell
- how much of each liquid
- a balloon
- spilled oil is slippery
- heavy for its size
- not needed
- a spoon
- False
- True
- True
- the order of pouring
- a magnet
- True
- False
- the same glass
- needed
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