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