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