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