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