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