Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 589 · 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? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a flower stem
3. 3.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a piece of foil (d) a piece of chalk
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
8. 8.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
11. 11.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
13. 13.🔮 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 stay white (c) they all turn green (d) they turn two colours
14. 14.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a glass marble (d) a flower stem
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a sugar cube
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) yeast
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
19. 19.True or false: a flower stem does not let water climb. (a) True (b) False
20. 20.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
21. 21.🧺 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) food colour
22. 22.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
23. 23.True or false: a piece of foil does not let water climb. (a) False (b) True
24. 24.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a magnet (d) food colour
26. 26.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
31. 31.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a plastic ruler (d) a glass marble
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a balloon (d) a magnet
33. 33.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a flower stem (d) a sugar cube
34. 34.🧺 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) a battery cell (d) a white flower
35. 35.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
36. 36.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
37. 37.True or false: a flower stem lets water climb up it. (a) False (b) True
38. 38.💧 Dip a steel spoon 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 mirror (b) a glass of water (c) a few hours of waiting (d) food colour
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False

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