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