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