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