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