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