Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 404 · 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 glass marble lets water climb up it. (a) False (b) True
2. 2.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) yeast
6. 6.⚖️ 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 amount of colour (c) the length of the stem
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) food colour
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) food colour
11. 11.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
13. 13.True or false: a flower stem does not let water climb. (a) True (b) False
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a magnet (d) a battery cell
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a balloon (d) a glass of water
16. 16.⚖️ 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 what we measure. (a) True (b) False
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.True or false: a plastic ruler lets water climb up it. (a) False (b) True
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a steel spoon lets water climb up it. (a) True (b) False
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a magnet
22. 22.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a piece of foil (d) a rubber eraser
24. 24.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a piece of chalk
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
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 kind of flower (b) time for colour to show (c) the length of the stem
27. 27.🔮 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
28. 28.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
29. 29.⚖️ 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 room it stands in (b) the amount of colour (c) the kind of flower (d) time for colour to show
30. 30.True or false: a flower stem lets water climb up it. (a) False (b) True
31. 31.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.True or false: a sugar cube does not let water climb. (a) True (b) False
34. 34.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a few hours of waiting (d) a glass of water
36. 36.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a few hours of waiting (d) yeast
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False

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