Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 409 · 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.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
4. 4.🔮 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
5. 5.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
6. 6.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the kind of flower
8. 8.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a few hours of waiting (d) food colour
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a mirror
13. 13.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🧺 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) food colour (d) a white flower
15. 15.🔍 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
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of colour (d) the kind of flower
17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a glass marble (d) a rubber eraser
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
19. 19.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a piece of chalk (d) a sugar cube
20. 20.⚖️ 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
21. 21.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a glass of water (d) turmeric powder
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) yeast
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) turmeric powder (d) food colour
26. 26.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a cotton thread (d) a rubber eraser
27. 27.🧺 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) a magnet (d) a white flower
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a battery cell (d) a magnet
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a piece of chalk (d) a paper towel
30. 30.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ 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 the one thing we change. (a) False (b) True
32. 32.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
33. 33.⚖️ 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) False (b) True
34. 34.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
36. 36.True or false: a cotton thread does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a flower stem (d) a piece of foil
38. 38.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a sugar cube lets water climb up it. (a) False (b) True
40. 40.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change

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