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.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) honey (c) water with food colour (d) cooking oil
- 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) a spoon (d) a mirror
- 3.🍯 Which of these is less dense than water? (a) a glass marble (b) air (c) a coin (d) very salty water
- 4.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a battery cell (c) a spoon (d) a magnet
- 5.⚖️ 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) False (b) True
- 6.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
- 7.True or false: honey is not needed for the density tower. (a) False (b) True
- 8.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
- 9.🔮 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) in the water layer (d) under the honey
- 10.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) taste each layer (d) throw the glass
- 11.True or false: water with food colour is needed for the density tower. (a) False (b) True
- 12.🔮 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 mix for ever (d) they become solid
- 13.⚖️ 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 the one thing we change. (a) True (b) False
- 14.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a spoon (c) a magnet (d) honey
- 15.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) a mirror (d) water with food colour
- 16.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
- 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 the one thing we change? (a) how much of each liquid (b) the same three liquids (c) the same glass (d) the order of pouring
- 18.True or false: water with food colour is not needed for the density tower. (a) False (b) True
- 19.🔍 Which is the odd one out? (a) very salty water (b) a coin (c) a glass marble (d) a cork
- 20.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
- 21.True or false: a pebble is less dense than water. (a) True (b) False
- 22.True or false: a mirror is needed for the density tower. (a) True (b) False
- 23.True or false: a magnet is needed for the density tower. (a) False (b) True
- 24.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) yeast (c) turmeric powder (d) a battery cell
- 25.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) honey (c) a spoon (d) yeast
- 26.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) in the water layer (d) at the very bottom
- 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 glass”? (a) we measure it (b) we keep it the same (c) we change it
- 28.🔍 Which layer is on top in the honey-water-oil tower? (a) coloured water (b) honey (c) cooking oil (d) the spoon
- 29.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) a battery cell (c) honey (d) a spoon
- 30.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
- 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 32.⚖️ 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
- 33.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
- 34.True or false: turmeric powder is needed for the density tower. (a) True (b) False
- 35.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) very salty water (d) a cork
- 36.True or false: a battery cell is needed for the density tower. (a) False (b) True
- 37.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
- 38.⚖️ 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 pouring (c) the order of the layers
- 39.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) three separate layers (d) the glass gets hot
- 40.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
Answer key
- a magnet
- a mirror
- air
- a spoon
- True
- True
- False
- denser than water
- on top of the oil
- do not lick the spoon
- True
- they separate again
- False
- a magnet
- water with food colour
- not needed
- the order of pouring
- False
- a cork
- denser than water
- False
- False
- False
- a tall clear glass
- yeast
- at the very bottom
- we keep it the same
- cooking oil
- a battery cell
- needed
- we keep it the same
- False
- needed
- False
- a cork
- False
- denser than water
- how much of each liquid
- three separate layers
- not needed
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