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