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