Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 487 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
2. 2.⚖️ 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 water (b) the length of the stem (c) time for colour to show
3. 3.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a steel spoon (d) a paper towel
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a cotton thread (d) a steel spoon
7. 7.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: a glass marble lets water climb up it. (a) False (b) True
9. 9.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a plastic ruler
10. 10.⚖️ 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
11. 11.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a piece of foil
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a few hours of waiting
13. 13.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.🔍 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 flower floats away (d) the water turns green
16. 16.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a glass marble
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) food colour
20. 20.True or false: a rubber eraser does not let water climb. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
22. 22.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) yeast (d) a battery cell
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a cotton thread lets water climb up it. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a steel spoon
27. 27.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a sugar cube (d) a strip of cloth
29. 29.🧺 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
30. 30.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
31. 31.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a flower stem (d) a cotton thread
32. 32.⚖️ 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
33. 33.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 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
35. 35.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a rubber eraser (d) a piece of foil
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) food colour
37. 37.⚖️ 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
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a rubber eraser (d) a steel spoon
40. 40.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up

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