Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 17 · 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.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a glass marble
3. 3.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a cotton thread (d) a strip of cloth
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
8. 8.True or false: a rubber eraser lets water climb up it. (a) False (b) True
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
10. 10.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
11. 11.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
13. 13.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🧺 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) a white flower (d) a mirror
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not 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.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a steel spoon
22. 22.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.True or false: a paper towel lets water climb up it. (a) False (b) True
25. 25.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a magnet (d) yeast
27. 27.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a rubber eraser (d) a plastic ruler
29. 29.🧺 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) a white flower (d) a magnet
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a glass marble lets water climb up it. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
33. 33.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
35. 35.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
36. 36.⚖️ 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 colour (b) the kind of flower (c) the length of the stem (d) time for colour to show
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 measure it (b) we change it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a strip of cloth (d) a sugar cube
39. 39.⚖️ 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
40. 40.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True

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