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