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