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