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