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) cooking oil (b) a spoon (c) yeast (d) honey
- 2.🍯 Which of these is denser than water? (a) a cork (b) a glass marble (c) an ice cube (d) cooking oil
- 3.True or false: cooking oil is denser than water. (a) False (b) True
- 4.🍯 Which of these is less dense than water? (a) very salty water (b) a coin (c) an ice cube (d) a glass marble
- 5.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
- 6.🍯 Which of these is denser than water? (a) air (b) an ice cube (c) very salty water (d) a ping-pong ball
- 7.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is yellow (c) it is the coldest (d) it is the densest
- 8.⚖️ 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 measure it (c) we keep it the same
- 9.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) bubbles of gas (d) three separate layers
- 10.🧺 Do we need honey for the density tower? (a) not needed (b) needed
- 11.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) cooking oil (c) a battery cell (d) a spoon
- 12.🍯 Which of these is less dense than water? (a) honey (b) a glass marble (c) a coin (d) air
- 13.True or false: a glass marble is less dense than water. (a) True (b) False
- 14.True or false: a spoon is needed for the density tower. (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? What do we do with “how much of each liquid”? (a) we keep it the same (b) we measure it (c) we change it
- 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 same three liquids”? (a) we keep it the same (b) we change it (c) we measure it
- 17.🧺 Which of these is needed for the density tower? (a) a balloon (b) a magnet (c) a battery cell (d) a spoon
- 18.True or false: honey is denser than water. (a) False (b) True
- 19.⚖️ 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
- 20.🫗 Why does cooking oil float on top of water? (a) oil is less dense (b) oil is sticky (c) oil is heavier (d) oil is hot
- 21.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) water with food colour (c) honey (d) a balloon
- 22.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) honey (d) cooking oil
- 23.True or false: a magnet is needed for the density tower. (a) False (b) True
- 24.True or false: a mirror is needed for the density tower. (a) False (b) True
- 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) honey (c) a tall clear glass (d) a spoon
- 26.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
- 27.⚖️ 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) the order of pouring (c) the same three liquids (d) the same glass
- 28.⚖️ 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
- 29.🧺 Do we need turmeric powder for the density tower? (a) not needed (b) needed
- 30.🧺 Which of these is needed for the density tower? (a) a balloon (b) a battery cell (c) a mirror (d) water with food colour
- 31.🔍 Which layer is on top in the honey-water-oil tower? (a) honey (b) the spoon (c) cooking oil (d) coloured water
- 32.📘 What does “dense” mean? (a) heavy for its size (b) very colourful (c) very thin (d) very hot
- 33.⚖️ 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) 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 the one thing we change? (a) the same three liquids (b) how much of each liquid (c) the order of pouring (d) the order of the layers
- 35.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
- 36.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the water layer (b) at the very bottom (c) on top of the oil (d) in the oil layer
- 37.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) cooking oil (c) a battery cell (d) a mirror
- 38.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) under the honey (c) in the honey layer (d) in the water layer
- 39.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a pebble (c) cooking oil (d) a cork
- 40.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a balloon (c) a tall clear glass (d) a spoon
Answer key
- yeast
- a glass marble
- False
- an ice cube
- denser than water
- very salty water
- it is the densest
- we change it
- three separate layers
- needed
- a battery cell
- air
- False
- True
- we keep it the same
- we keep it the same
- a spoon
- True
- True
- oil is less dense
- a balloon
- cooking oil
- False
- False
- a magnet
- not needed
- the order of the layers
- True
- not needed
- water with food colour
- cooking oil
- heavy for its size
- True
- the order of pouring
- less dense than water
- at the very bottom
- cooking oil
- on top of the oil
- a pebble
- a balloon
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