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