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