Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 889 · 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.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a white flower (d) turmeric powder
3. 3.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
5. 5.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a glass of water (d) a few hours of waiting
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a mirror (d) a few hours of waiting
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
10. 10.⚖️ 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
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the amount of water (d) the length of the stem
12. 12.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚖️ 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
15. 15.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
17. 17.🧺 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 balloon
18. 18.⚖️ 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
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a glass of water (d) a magnet
21. 21.True or false: a cotton thread does not let water climb. (a) False (b) True
22. 22.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
26. 26.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
29. 29.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a magnet (d) yeast
31. 31.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a plastic ruler (d) a steel spoon
33. 33.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a steel spoon (d) a glass marble
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
36. 36.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a glass of water
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air

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