Density Tower Experiment Worksheet

Science experiments lesson 2: Density tower: honey, water and oil · Set 490 · 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.🛟 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
2. 2.🫗 Why does cooking oil float on top of water? (a) oil is sticky (b) oil is heavier (c) oil is less dense (d) oil is hot
3. 3.True or false: yeast is needed for the density tower. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) very salty water (b) honey (c) an ice cube (d) a glass marble
5. 5.🔍 Which is the odd one out? (a) a pebble (b) air (c) honey (d) a coin
6. 6.🧺 Which of these is needed for the density tower? (a) a balloon (b) yeast (c) a mirror (d) water with food colour
7. 7.🍯 Which of these is denser than water? (a) cooking oil (b) a cork (c) an ice cube (d) a pebble
8. 8.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) throw the glass (c) pour it on the floor (d) do not lick the spoon
9. 9.True or false: cooking oil is needed for the density tower. (a) True (b) False
10. 10.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) in the honey layer (c) on top of the oil (d) under the honey
11. 11.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is yellow (c) it is the stickiest (d) it is the coldest
12. 12.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a spoon (c) water with food colour (d) a battery cell
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: how much of each liquid is kept the same. (a) True (b) False
14. 14.🍯 Is a pebble denser or less dense than water? (a) denser than water (b) less dense than water
15. 15.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a spoon (c) a magnet (d) honey
17. 17.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
18. 18.🧺 Do we need water with food colour for the density tower? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
21. 21.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they turn to honey (b) they become solid (c) they mix for ever (d) they separate again
22. 22.True or false: a tall clear glass is not needed for the density tower. (a) True (b) False
23. 23.⚖️ 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 change it (c) we keep it the same
24. 24.True or false: a ping-pong ball is denser than water. (a) True (b) False
25. 25.True or false: a ping-pong ball is less dense than water. (a) False (b) True
26. 26.🍯 Which of these is denser than water? (a) air (b) cooking oil (c) a coin (d) a cork
27. 27.🔍 Which is the odd one out? (a) an ice cube (b) a ping-pong ball (c) a pebble (d) cooking oil
28. 28.True or false: cooking oil is not needed for the density tower. (a) False (b) True
29. 29.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
30. 30.⚖️ 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 order of pouring (b) the order of the layers (c) how much of each liquid (d) the same glass
31. 31.🍯 Is a glass marble denser or less dense than water? (a) denser than water (b) less dense than water
32. 32.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
33. 33.True or false: a glass marble is denser than water. (a) False (b) True
34. 34.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) the glass gets hot (c) three separate layers (d) bubbles of gas
35. 35.📘 What does “dense” mean? (a) very colourful (b) very thin (c) heavy for its size (d) very hot
36. 36.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
37. 37.⚖️ 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 what we measure. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a pebble (b) cooking oil (c) very salty water (d) honey
39. 39.True or false: turmeric powder is needed for the density tower. (a) False (b) True
40. 40.True or false: a pebble is denser than water. (a) False (b) True

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