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