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