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