Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 466 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
7. 7.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
8. 8.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a glass marble (d) a steel spoon
9. 9.True or false: a cotton thread does not let water climb. (a) False (b) True
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) turmeric powder (d) a battery cell
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
12. 12.⚖️ 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 amount of colour (b) time for colour to show (c) the room it stands in (d) the amount of water
13. 13.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
15. 15.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a strip of cloth lets water climb up it. (a) True (b) False
18. 18.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of foil (c) a cotton thread (d) a flower stem
19. 19.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.⚖️ 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) the length of the stem (c) time for colour to show
21. 21.⚖️ 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
22. 22.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a rubber eraser (d) a steel spoon
24. 24.🌼 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
25. 25.🔮 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
26. 26.⚖️ 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
27. 27.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a glass marble (d) a plastic ruler
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the room it stands in (c) the length of the stem
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
30. 30.🔮 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
31. 31.⚖️ 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
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.True or false: a glass marble does not let water climb. (a) True (b) False
34. 34.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
36. 36.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
38. 38.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a strip of cloth
39. 39.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 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 glass of water (d) a battery cell

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