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