Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 569 · 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.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
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 all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a balloon (d) a few hours of waiting
4. 4.⚖️ 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
5. 5.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a cotton thread (d) a piece of chalk
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a battery cell
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) yeast (d) a glass of water
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a strip of cloth
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) a white flower
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a mirror (d) a battery cell
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) the kind of flower (c) the amount of water (d) time for colour to show
13. 13.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) a white flower
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
21. 21.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
22. 22.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a paper towel
23. 23.⚖️ 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
24. 24.True or false: a cotton thread does not let water climb. (a) True (b) False
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: a rubber eraser does not let water climb. (a) True (b) False
27. 27.True or false: a plastic ruler does not let water climb. (a) False (b) True
28. 28.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
29. 29.True or false: a flower stem lets water climb up it. (a) False (b) True
30. 30.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
32. 32.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.True or false: a steel spoon lets water climb up it. (a) False (b) True
34. 34.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a mirror (d) a battery cell
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a battery cell (d) a balloon
37. 37.⚖️ 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
38. 38.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a flower stem (d) a rubber eraser
40. 40.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking

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