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.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
- 2.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) cooking oil (d) a balloon
- 3.🔍 Which is the odd one out? (a) very salty water (b) a pebble (c) air (d) honey
- 4.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
- 5.🔍 Which is the odd one out? (a) a cork (b) very salty water (c) cooking oil (d) a ping-pong ball
- 6.True or false: an ice cube is less dense than water. (a) True (b) False
- 7.⚖️ 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 what we measure. (a) False (b) True
- 8.🍯 Which of these is less dense than water? (a) honey (b) very salty water (c) air (d) a glass marble
- 9.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
- 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 the layers”? (a) we change it (b) we keep it the same (c) we measure it
- 11.🔍 Which is the odd one out? (a) a ping-pong ball (b) cooking oil (c) an ice cube (d) honey
- 12.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
- 13.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a magnet (d) honey
- 14.🔍 Which is the odd one out? (a) an ice cube (b) air (c) a ping-pong ball (d) a pebble
- 15.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
- 16.⚖️ 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
- 17.🍯 Which of these is denser than water? (a) a coin (b) an ice cube (c) air (d) cooking oil
- 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 what we measure? (a) how much of each liquid (b) the same three liquids (c) the order of pouring (d) the order of the layers
- 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 turn to honey (d) they separate again
- 20.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) throw the glass (d) do not lick the spoon
- 21.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) water with food colour (c) honey (d) a spoon
- 22.⚖️ 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
- 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 kept the same. (a) False (b) True
- 24.🔍 Which is the odd one out? (a) a coin (b) honey (c) a glass marble (d) an ice cube
- 25.🍯 Which of these is less dense than water? (a) a coin (b) cooking oil (c) very salty water (d) honey
- 26.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) honey (c) a tall clear glass (d) a magnet
- 27.🛟 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
- 28.True or false: a tall clear glass is needed for the density tower. (a) False (b) True
- 29.🍯 Which of these is denser than water? (a) an ice cube (b) air (c) cooking oil (d) honey
- 30.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) coloured water (c) honey (d) cooking oil
- 31.🔍 Which is the odd one out? (a) very salty water (b) cooking oil (c) a pebble (d) a glass marble
- 32.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is yellow (d) it is the densest
- 33.⚖️ 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) False (b) True
- 34.🍯 Is cooking oil denser or less dense than water? (a) denser than water (b) less dense than water
- 35.🔍 Which is the odd one out? (a) a coin (b) a ping-pong ball (c) honey (d) a pebble
- 36.🧺 Do we need cooking oil for the density tower? (a) needed (b) not needed
- 37.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
- 38.True or false: air is less dense than water. (a) True (b) False
- 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 change it (b) we keep it the same (c) we measure it
- 40.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
Answer key
- not needed
- a balloon
- air
- denser than water
- very salty water
- True
- True
- air
- needed
- we measure it
- honey
- less dense than water
- honey
- a pebble
- not needed
- True
- a coin
- the order of the layers
- they separate again
- do not lick the spoon
- a magnet
- we change it
- False
- an ice cube
- cooking oil
- a magnet
- spilled oil is slippery
- True
- honey
- cooking oil
- cooking oil
- it is the densest
- False
- less dense than water
- a ping-pong ball
- needed
- not needed
- True
- we keep it the same
- needed
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