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