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.⚖️ 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 three liquids (b) the order of pouring (c) the order of the layers
- 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) honey (c) a tall clear glass (d) a battery cell
- 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 what we measure? (a) how much of each liquid (b) the order of the layers (c) the same glass (d) the order of pouring
- 4.🔮 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
- 5.⚖️ 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
- 6.🍯 Is a glass marble denser or less dense than water? (a) less dense than water (b) denser than water
- 7.🍯 Which of these is denser than water? (a) a cork (b) very salty water (c) an ice cube (d) cooking oil
- 8.🔍 What do you see after pouring honey, water and oil into one glass? (a) three separate layers (b) bubbles of gas (c) the glass gets hot (d) one mixed colour
- 9.🔍 Which is the odd one out? (a) cooking oil (b) a glass marble (c) a pebble (d) honey
- 10.True or false: air is denser than water. (a) True (b) False
- 11.True or false: a balloon is not needed for the density tower. (a) True (b) False
- 12.True or false: very salty water is less dense than water. (a) True (b) False
- 13.🍯 Is a cork denser or less dense than water? (a) less dense than water (b) denser than water
- 14.🛟 Which rule keeps the density tower experiment safe? (a) throw the glass (b) taste each layer (c) pour it on the floor (d) do not lick the spoon
- 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) honey (d) a magnet
- 16.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
- 17.🛟 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
- 18.True or false: yeast is needed for the density tower. (a) False (b) True
- 19.🔍 Which is the odd one out? (a) an ice cube (b) a pebble (c) honey (d) a glass marble
- 20.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
- 21.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) honey (d) yeast
- 22.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
- 23.⚖️ 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
- 24.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) a ping-pong ball (d) cooking oil
- 25.True or false: water with food colour is needed for the density tower. (a) False (b) True
- 26.True or false: yeast is not needed for the density tower. (a) True (b) False
- 27.True or false: water with food colour is not needed for the density tower. (a) False (b) True
- 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) a mirror (d) a spoon
- 29.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a coin (c) cooking oil (d) air
- 30.🧺 Which of these is needed for the density tower? (a) a balloon (b) a mirror (c) honey (d) a battery cell
- 31.True or false: a balloon is needed for the density tower. (a) True (b) False
- 32.🍯 Which of these is less dense than water? (a) cooking oil (b) very salty water (c) honey (d) a coin
- 33.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) cooking oil (d) an ice cube
- 34.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
- 35.True or false: honey is needed for the density tower. (a) False (b) True
- 36.True or false: a coin is denser than water. (a) False (b) True
- 37.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
- 38.🔮 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 mix for ever (d) they separate again
- 39.🧺 Which of these is needed for the density tower? (a) yeast (b) a tall clear glass (c) turmeric powder (d) a mirror
- 40.⚖️ 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
Answer key
- the same three liquids
- a battery cell
- the order of the layers
- on top of the oil
- we keep it the same
- denser than water
- very salty water
- three separate layers
- cooking oil
- False
- True
- False
- less dense than water
- do not lick the spoon
- a magnet
- False
- spilled oil is slippery
- False
- an ice cube
- denser than water
- yeast
- less dense than water
- we keep it the same
- a coin
- True
- True
- False
- a mirror
- a coin
- honey
- False
- cooking oil
- a glass marble
- not needed
- True
- True
- needed
- they separate again
- a tall clear glass
- False
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