Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 410 · 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? True or false: the length of the stem is what we measure. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a paper towel (d) a strip of cloth
3. 3.⚖️ 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 water (c) time for colour to show
4. 4.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
6. 6.True or false: a flower stem lets water climb up it. (a) True (b) False
7. 7.🧺 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 magnet (d) a white flower
8. 8.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
9. 9.⚖️ 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
10. 10.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a paper towel (d) a cotton thread
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 kind of flower (b) the amount of colour (c) time for colour to show (d) the length of the stem
13. 13.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
15. 15.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a glass marble
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) turmeric powder (d) yeast
19. 19.True or false: a piece of foil does not let water climb. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) turmeric powder (d) a few hours of waiting
21. 21.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a white flower (d) turmeric powder
23. 23.True or false: a rubber eraser lets water climb up it. (a) False (b) True
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.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a strip of cloth (d) a cotton thread
26. 26.⚖️ 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 kind of flower (b) the amount of water (c) the amount of colour (d) the length of the stem
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a balloon (d) a mirror
28. 28.🔍 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 flower floats away (d) the petals turn bluish
29. 29.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) yeast (d) a white flower
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
36. 36.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a piece of foil
39. 39.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
40. 40.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True

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