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? True or false: the order of pouring is the one thing we change. (a) False (b) True
- 2.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
- 3.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is yellow (c) it is the coldest (d) it is the stickiest
- 4.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) a tall clear glass (d) turmeric powder
- 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.True or false: turmeric powder is not needed for the density tower. (a) False (b) True
- 7.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) on top of the oil (d) under the honey
- 8.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
- 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
- 10.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
- 11.⚖️ 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 measure it (c) we change it
- 12.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
- 13.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) honey (d) a balloon
- 14.True or false: cooking oil is denser than water. (a) False (b) True
- 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 the one thing we change. (a) False (b) True
- 16.🧺 Do we need a balloon for the density tower? (a) needed (b) not needed
- 17.⚖️ 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
- 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 order of pouring”? (a) we measure it (b) we change it (c) we keep it the same
- 19.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
- 20.🔍 Which is the odd one out? (a) honey (b) a pebble (c) a ping-pong ball (d) very salty water
- 21.🧺 Which of these is not needed for the density tower? (a) honey (b) a spoon (c) a battery cell (d) water with food colour
- 22.🧺 Which of these is needed for the density tower? (a) cooking oil (b) turmeric powder (c) a battery cell (d) yeast
- 23.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they become solid (b) they separate again (c) they mix for ever (d) they turn to honey
- 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) water with food colour (d) a battery cell
- 25.🧺 Which of these is needed for the density tower? (a) yeast (b) a spoon (c) a balloon (d) turmeric powder
- 26.🧺 Which of these is not needed for the density tower? (a) a mirror (b) honey (c) a tall clear glass (d) cooking oil
- 27.True or false: honey is denser than water. (a) True (b) False
- 28.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
- 29.True or false: honey is less dense than water. (a) True (b) False
- 30.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
- 31.True or false: a mirror is needed for the density tower. (a) True (b) False
- 32.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) a ping-pong ball (d) cooking oil
- 33.True or false: a glass marble is less dense than water. (a) False (b) True
- 34.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) a coin (d) air
- 35.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is less dense (c) oil is sticky (d) oil is hot
- 36.🔍 Which is the odd one out? (a) cooking oil (b) a coin (c) honey (d) very salty water
- 37.⚖️ 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
- 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 the one thing we change? (a) the same glass (b) the order of pouring (c) the same three liquids (d) the order of the layers
- 39.⚖️ 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 what we measure. (a) True (b) False
- 40.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
Answer key
- True
- less dense than water
- it is the densest
- turmeric powder
- True
- True
- on top of the oil
- needed
- we keep it the same
- less dense than water
- we keep it the same
- not needed
- a balloon
- False
- False
- not needed
- False
- we change it
- needed
- a ping-pong ball
- a battery cell
- cooking oil
- they separate again
- a battery cell
- a spoon
- a mirror
- True
- False
- False
- denser than water
- False
- a glass marble
- False
- a coin
- oil is less dense
- cooking oil
- the same glass
- the order of pouring
- False
- less dense than water
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