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