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