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