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