Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 610 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
2. 2.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
3. 3.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a flower stem
5. 5.⚖️ 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 what we measure. (a) True (b) False
6. 6.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a paper towel (d) a piece of foil
8. 8.True or false: a cotton thread does not let water climb. (a) False (b) True
9. 9.💧 Which of these lets water climb up it? (a) a sugar cube (b) a steel spoon (c) a rubber eraser (d) a piece of foil
10. 10.True or false: a plastic ruler does not let water climb. (a) True (b) False
11. 11.True or false: a piece of foil lets water climb up it. (a) True (b) False
12. 12.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the room it stands in (d) the length of the stem
14. 14.⚖️ 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 kept the same. (a) True (b) False
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a strip of cloth (d) a sugar cube
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) turmeric powder
19. 19.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
21. 21.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) turmeric powder
23. 23.⚖️ 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
24. 24.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a paper towel (d) a strip of cloth
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a magnet (d) a mirror
29. 29.🛟 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
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a balloon
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a rubber eraser
32. 32.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a battery cell (d) a few hours of waiting
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) a few hours of waiting
35. 35.⚖️ 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
36. 36.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show
37. 37.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
39. 39.🔮 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
40. 40.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a glass marble (d) a sugar cube

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