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