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