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