Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 388 · 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.True or false: a steel spoon lets water climb up it. (a) True (b) False
2. 2.⚖️ 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) the length of the stem (d) time for colour to show
3. 3.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a plastic ruler (d) a piece of foil
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a piece of chalk (d) a paper towel
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
6. 6.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
7. 7.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
9. 9.True or false: a plastic ruler does not let water climb. (a) True (b) False
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a glass marble
13. 13.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a magnet (d) a glass of water
15. 15.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.True or false: a cotton thread lets water climb up it. (a) True (b) False
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
23. 23.🧺 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) yeast
24. 24.True or false: a rubber eraser lets water climb up it. (a) False (b) True
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
26. 26.⚖️ 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 amount of water
27. 27.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a paper towel (d) a sugar cube
28. 28.⚖️ 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 length of the stem (c) the room it stands in (d) the amount of water
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a white flower (d) a glass of water
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a paper towel (d) a strip of cloth
31. 31.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a flower stem does not let water climb. (a) False (b) True
33. 33.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
34. 34.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
39. 39.True or false: a glass marble does not let water climb. (a) True (b) False
40. 40.⚖️ 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

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