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