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.🔮 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 water layer (d) in the honey layer
- 2.🍯 Which of these is less dense than water? (a) very salty water (b) an ice cube (c) a glass marble (d) honey
- 3.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
- 4.⚖️ 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) False (b) True
- 5.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a battery cell (b) a spoon (c) water with food colour (d) cooking oil
- 6.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a balloon (d) a battery cell
- 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.🧺 Which of these is not needed for the density tower? (a) honey (b) a tall clear glass (c) a mirror (d) water with food colour
- 9.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) True (b) False
- 10.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) a glass marble (d) an ice cube
- 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) False (b) True
- 12.True or false: very salty water is less dense than water. (a) True (b) False
- 13.🔍 Which layer is on top in the honey-water-oil tower? (a) the spoon (b) coloured water (c) cooking oil (d) honey
- 14.🍯 Which of these is less dense than water? (a) air (b) honey (c) very salty water (d) a pebble
- 15.🍯 Which of these is denser than water? (a) a cork (b) air (c) a coin (d) a ping-pong ball
- 16.True or false: a tall clear glass is needed for the density tower. (a) True (b) False
- 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a magnet (d) cooking oil
- 18.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) a spoon (d) cooking oil
- 19.⚖️ 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 same three liquids (c) the order of pouring (d) the order of the layers
- 20.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) a spoon (d) turmeric powder
- 21.True or false: water with food colour is needed for the density tower. (a) True (b) False
- 22.True or false: a spoon is needed for the density tower. (a) False (b) True
- 23.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
- 24.🔍 Which is the odd one out? (a) a cork (b) very salty water (c) a pebble (d) a coin
- 25.📘 What does “dense” mean? (a) very colourful (b) very thin (c) very hot (d) heavy for its size
- 26.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
- 27.🧺 Which of these is needed for the density tower? (a) honey (b) a battery cell (c) yeast (d) a balloon
- 28.🍯 Which of these is less dense than water? (a) a pebble (b) honey (c) a glass marble (d) a cork
- 29.🔍 Which is the odd one out? (a) air (b) a glass marble (c) a pebble (d) a coin
- 30.🛟 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
- 31.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
- 32.⚖️ 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 change it (b) we measure it (c) we keep it the same
- 33.True or false: cooking oil is denser than water. (a) True (b) False
- 34.True or false: a balloon is needed for the density tower. (a) True (b) False
- 35.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
- 36.🍯 Is a ping-pong ball denser or less dense than water? (a) less dense than water (b) denser than water
- 37.True or false: a mirror is not needed for the density tower. (a) False (b) True
- 38.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a battery cell (c) yeast (d) cooking oil
- 39.🧺 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) a mirror (d) honey
- 40.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) honey (d) an ice cube
Answer key
- on top of the oil
- an ice cube
- denser than water
- False
- a battery cell
- a spoon
- False
- a mirror
- True
- a glass marble
- False
- False
- cooking oil
- air
- a coin
- True
- a magnet
- a balloon
- the order of pouring
- turmeric powder
- True
- True
- denser than water
- a cork
- heavy for its size
- denser than water
- honey
- a cork
- air
- spilled oil is slippery
- needed
- we change it
- False
- False
- not needed
- less dense than water
- True
- cooking oil
- a mirror
- an ice cube
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