Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 873 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of colour (c) time for colour to show
2. 2.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a glass marble (d) a plastic ruler
5. 5.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a rubber eraser (d) a glass marble
6. 6.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a strip of cloth
7. 7.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
8. 8.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
10. 10.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a rubber eraser
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a sugar cube
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) True (b) False
18. 18.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
19. 19.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a cotton thread (d) a flower stem
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a mirror (d) a magnet
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) time for colour to show (c) the amount of water (d) the length of the stem
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) the length of the stem (c) time for colour to show
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) a white flower
29. 29.True or false: a cotton thread lets water climb up it. (a) True (b) False
30. 30.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
32. 32.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a balloon (d) a mirror
34. 34.💧 Which of these does not let water climb? (a) a piece of foil (b) a flower stem (c) a sugar cube (d) a strip of cloth
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
37. 37.True or false: a piece of chalk does not let water climb. (a) False (b) True
38. 38.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a glass of water (d) turmeric powder
40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action

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