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