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