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