Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 305 · 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 glass of water (c) a balloon (d) food colour
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
5. 5.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a paper towel (d) a steel spoon
7. 7.True or false: a plastic ruler lets water climb up it. (a) True (b) False
8. 8.🔮 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 turn two colours (c) they all turn green (d) they stay white
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a glass of water (d) a white flower
10. 10.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) turmeric powder (d) a few hours of waiting
13. 13.⚖️ 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
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 keep it the same (c) we measure it
15. 15.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) yeast (d) a battery cell
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a piece of chalk (d) a paper towel
18. 18.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a strip of cloth (d) a flower stem
19. 19.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
20. 20.⚖️ 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
21. 21.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a balloon (d) a magnet
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
24. 24.True or false: a sugar cube does not let water climb. (a) False (b) True
25. 25.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
26. 26.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a glass marble (d) a steel spoon
29. 29.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.True or false: a paper towel does not let water climb. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) yeast
33. 33.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a battery cell (d) a white flower
37. 37.True or false: a steel spoon lets water climb up it. (a) True (b) False
38. 38.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) a glass of water
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a few hours of waiting (d) a mirror

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