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