Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 745 · 40 questions

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.

1. 1.True or false: very salty water is less dense than water. (a) False (b) True
2. 2.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
3. 3.⚖️ 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 three liquids (b) the same glass (c) the order of the layers (d) the order of pouring
4. 4.📘 What does “dense” mean? (a) heavy for its size (b) very colourful (c) very hot (d) very thin
5. 5.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) yeast (c) a spoon (d) cooking oil
6. 6.⚖️ 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 glass
7. 7.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a balloon (b) cooking oil (c) honey (d) a spoon
9. 9.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) pour it on the floor (c) do not lick the spoon (d) throw the glass
10. 10.⚖️ 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 kept the same. (a) True (b) False
11. 11.⚖️ 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
12. 12.True or false: air is denser than water. (a) False (b) True
13. 13.⚖️ 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
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.⚖️ 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) True (b) False
16. 16.True or false: yeast is not needed for the density tower. (a) False (b) True
17. 17.⚖️ 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 three liquids”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.True or false: a cork is less dense than water. (a) False (b) True
20. 20.🫗 Why does cooking oil float on top of water? (a) oil is heavier (b) oil is sticky (c) oil is less dense (d) oil is hot
21. 21.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
22. 22.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
23. 23.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) bubbles of gas (c) three separate layers (d) the glass gets hot
24. 24.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a magnet (c) water with food colour (d) a tall clear glass
25. 25.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) at the very bottom (b) in the oil layer (c) on top of the oil (d) in the water layer
26. 26.True or false: honey is less dense than water. (a) False (b) True
27. 27.🍯 Which of these is denser than water? (a) cooking oil (b) a cork (c) very salty water (d) an ice cube
28. 28.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) turmeric powder (c) yeast (d) a balloon
29. 29.True or false: a ping-pong ball is less dense than water. (a) True (b) False
30. 30.🛟 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
31. 31.🔮 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 mix for ever (d) they become solid
32. 32.🔮 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
33. 33.True or false: a glass marble is less dense than water. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) air (b) a ping-pong ball (c) a coin (d) an ice cube
35. 35.⚖️ 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
36. 36.⚖️ 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) True (b) False
37. 37.🍯 Which of these is less dense than water? (a) an ice cube (b) very salty water (c) a pebble (d) honey
38. 38.True or false: honey is needed for the density tower. (a) False (b) True
39. 39.🧺 Which of these is needed for the density tower? (a) a spoon (b) yeast (c) a battery cell (d) a balloon
40. 40.True or false: air is less dense than water. (a) False (b) True

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