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