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