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 needed for the density tower? (a) a battery cell (b) a mirror (c) water with food colour (d) a balloon
- 2.True or false: yeast is needed for the density tower. (a) False (b) True
- 3.🔍 Which is the odd one out? (a) a cork (b) air (c) honey (d) an ice cube
- 4.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a battery cell (c) a spoon (d) a tall clear glass
- 5.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) under the honey (b) in the water layer (c) in the honey layer (d) on top of the oil
- 6.🔍 Which is the odd one out? (a) an ice cube (b) air (c) a glass marble (d) cooking oil
- 7.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) water with food colour (c) a magnet (d) a spoon
- 8.🧺 Which of these is needed for the density tower? (a) a mirror (b) a magnet (c) a spoon (d) a balloon
- 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
- 10.⚖️ 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) False (b) True
- 11.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) an ice cube (d) a coin
- 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) cooking oil (d) a tall clear glass
- 13.⚖️ 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 three liquids (c) how much of each liquid (d) the same glass
- 14.True or false: a ping-pong ball is denser than water. (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? True or false: the same three liquids is the one thing we change. (a) False (b) True
- 16.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) throw the glass (d) pour it on the floor
- 17.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) water with food colour (c) a balloon (d) a tall clear glass
- 18.🧺 Do we need cooking oil for the density tower? (a) not needed (b) needed
- 19.🍯 Which of these is less dense than water? (a) a coin (b) honey (c) a pebble (d) cooking oil
- 20.🔮 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
- 21.🔍 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
- 22.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a spoon (c) water with food colour (d) yeast
- 23.🍯 Is a coin denser or less dense than water? (a) less dense than water (b) denser than water
- 24.🍯 Which of these is denser than water? (a) air (b) a cork (c) cooking oil (d) honey
- 25.🍯 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
- 26.🧺 Which of these is not needed for the density tower? (a) a balloon (b) water with food colour (c) cooking oil (d) a spoon
- 27.⚖️ 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 same glass (c) how much of each liquid (d) the order of pouring
- 28.True or false: air is denser than water. (a) True (b) False
- 29.True or false: a pebble is denser than water. (a) True (b) False
- 30.⚖️ 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) True (b) False
- 31.🧺 Which of these is needed for the density tower? (a) cooking oil (b) a magnet (c) a balloon (d) a mirror
- 32.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) honey (c) a tall clear glass (d) a magnet
- 33.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a mirror (c) a tall clear glass (d) cooking oil
- 34.True or false: a mirror is needed for the density tower. (a) True (b) False
- 35.True or false: honey is less dense than water. (a) False (b) True
- 36.🧺 Do we need turmeric powder for the density tower? (a) needed (b) not needed
- 37.🧺 Which of these is needed for the density tower? (a) yeast (b) a mirror (c) a battery cell (d) a tall clear glass
- 38.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) very salty water (d) a ping-pong ball
- 39.🍯 Is very salty water denser or less dense than water? (a) less dense than water (b) denser than water
- 40.⚖️ 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 the one thing we change. (a) True (b) False
Answer key
- water with food colour
- False
- honey
- a battery cell
- on top of the oil
- a glass marble
- a magnet
- a spoon
- we change it
- True
- an ice cube
- turmeric powder
- the order of the layers
- False
- False
- do not lick the spoon
- a balloon
- needed
- cooking oil
- they separate again
- three separate layers
- yeast
- denser than water
- honey
- it is the densest
- a balloon
- the order of pouring
- False
- True
- True
- cooking oil
- a magnet
- a mirror
- False
- False
- not needed
- a tall clear glass
- very salty water
- denser than water
- False
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