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