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