Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 326 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) turmeric powder (d) a mirror
2. 2.🔮 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 turn two colours (d) they fall off at once
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) food colour (d) a few hours of waiting
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a mirror (d) a balloon
7. 7.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a white flower (d) a glass of water
10. 10.🌼 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
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
13. 13.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a few hours of waiting (d) a white flower
15. 15.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
17. 17.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) food colour (d) a white flower
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
22. 22.⚖️ 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 change it (c) we measure it
23. 23.⚖️ 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 water (b) the room it stands in (c) the kind of flower (d) time for colour to show
24. 24.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
27. 27.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a white flower (d) a few hours of waiting
29. 29.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
32. 32.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
33. 33.🔍 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 water turns green (d) the flower floats away
34. 34.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a piece of chalk lets water climb up it. (a) True (b) False
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) food colour (d) a few hours of waiting
37. 37.💧 Which of these does not let water climb? (a) a glass marble (b) a flower stem (c) a paper towel (d) a piece of chalk
38. 38.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a paper towel (d) a cotton thread
40. 40.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed

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