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