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