Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 699 · 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.🧺 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) a mirror (d) food colour
2. 2.🔮 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 fall off at once (c) they turn two colours (d) they stay white
3. 3.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a piece of foil (d) a sugar cube
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) turmeric powder
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a balloon
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a white flower (d) a magnet
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 magnet (c) a glass of water (d) a white flower
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
11. 11.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
14. 14.True or false: a cotton thread does not let water climb. (a) True (b) False
15. 15.🔍 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 flower floats away (d) the petals turn bluish
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a rubber eraser (d) a flower stem
18. 18.🔮 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
19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
20. 20.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
21. 21.True or false: a steel spoon lets water climb up it. (a) True (b) False
22. 22.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) turmeric powder
24. 24.True or false: a paper towel lets water climb up it. (a) False (b) True
25. 25.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
27. 27.⚖️ 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
28. 28.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.⚖️ 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
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a white flower (d) a few hours of waiting
32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a sugar cube (d) a glass marble
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) yeast (d) a white flower
34. 34.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a sugar cube
35. 35.True or false: a paper towel does not let water climb. (a) True (b) False
36. 36.🛟 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
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
38. 38.True or false: a rubber eraser lets water climb up it. (a) True (b) False
39. 39.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
40. 40.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True

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