Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 195 · 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.⚖️ 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 change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
3. 3.🔍 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 water turns green (d) the flower floats away
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) food colour (d) a balloon
5. 5.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a piece of foil (d) a glass marble
7. 7.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 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) food colour (d) a balloon
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
10. 10.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
11. 11.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a mirror
13. 13.True or false: a cotton thread lets water climb up it. (a) True (b) False
14. 14.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the stem turns blue (d) the flower glows
17. 17.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a plastic ruler
18. 18.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) food colour
21. 21.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a plastic ruler
22. 22.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🛟 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
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
25. 25.🧺 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
26. 26.⚖️ 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) 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 kind of flower is the one thing we change. (a) True (b) False
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a glass marble
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a piece of chalk (d) a sugar cube
32. 32.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ 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) True (b) False
36. 36.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.⚖️ 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
38. 38.True or false: a flower stem does not let water climb. (a) True (b) False
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a battery cell (d) a white flower
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed

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