Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 695 · 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.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
4. 4.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a rubber eraser (d) a piece of foil
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🔮 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 all turn green (c) they fall off at once (d) they turn two colours
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a flower stem
13. 13.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
14. 14.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a rubber eraser
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
16. 16.⚖️ 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 the one thing we change. (a) True (b) False
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a piece of foil
18. 18.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) the amount of water (c) time for colour to show (d) the length of the stem
20. 20.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
21. 21.True or false: a glass marble does not let water climb. (a) True (b) False
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) yeast (d) food colour
23. 23.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a white flower (d) food colour
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a magnet
27. 27.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a balloon (c) yeast (d) a mirror
29. 29.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a piece of chalk (d) a strip of cloth
30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a paper towel
31. 31.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a plastic ruler (d) a glass marble
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
35. 35.⚖️ 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
36. 36.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
37. 37.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False

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