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