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