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