Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 353 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
2. 2.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a piece of foil (d) a steel spoon
3. 3.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of water
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a glass of water (d) a few hours of waiting
5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a strip of cloth (d) a steel spoon
6. 6.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
7. 7.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a strip of cloth (d) a plastic ruler
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a mirror
9. 9.🧺 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
10. 10.True or false: a paper towel lets water climb up it. (a) True (b) False
11. 11.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
12. 12.⚖️ 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 the one thing we change. (a) True (b) False
13. 13.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
15. 15.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
16. 16.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.True or false: a strip of cloth does not let water climb. (a) False (b) True
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
19. 19.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a magnet (d) turmeric powder
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 length of the stem (b) time for colour to show (c) the kind of flower
22. 22.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
23. 23.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
24. 24.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
26. 26.⚖️ 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 kept the same. (a) True (b) False
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
28. 28.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
29. 29.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a cotton thread
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) food colour (d) a white flower
34. 34.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: a piece of foil lets water climb up it. (a) True (b) False
36. 36.⚖️ 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) True (b) False
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a plastic ruler (d) a steel spoon
39. 39.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
40. 40.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a steel spoon (d) a glass marble

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