Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 449 · 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.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
2. 2.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a flower stem (d) a plastic ruler
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a glass of water (d) a few hours of waiting
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) food colour (d) a few hours of waiting
9. 9.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.⚖️ 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 the one thing we change. (a) True (b) False
11. 11.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
14. 14.🔮 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 turn two colours (c) they fall off at once (d) they stay white
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) food colour
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a sugar cube (d) a plastic ruler
17. 17.⚖️ 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 water (b) the kind of flower (c) the room it stands in (d) time for colour to show
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a cotton thread (d) a plastic ruler
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) turmeric powder (d) food colour
21. 21.True or false: a cotton thread lets water climb up it. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of water
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.True or false: a glass marble lets water climb up it. (a) True (b) False
26. 26.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
27. 27.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.⚖️ 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
32. 32.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🔮 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
34. 34.True or false: a plastic ruler lets water climb up it. (a) True (b) False
35. 35.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a balloon (d) a battery cell
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
38. 38.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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