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