Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 660 · 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.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🔮 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
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
4. 4.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the length of the stem (c) the kind of flower (d) the amount of water
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
11. 11.⚖️ 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 kind of flower (b) the amount of colour (c) the length of the stem (d) time for colour to show
12. 12.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a sugar cube
13. 13.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a plastic ruler (d) a sugar cube
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a strip of cloth does not let water climb. (a) True (b) False
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
19. 19.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
22. 22.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
23. 23.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
24. 24.🔍 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
25. 25.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
28. 28.🔮 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 stay white (c) they turn two colours (d) they fall off at once
29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) food colour
33. 33.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a sugar cube (d) a steel spoon
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 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 magnet (d) a white flower
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a few hours of waiting (d) a glass of water
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a white flower
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 kept the same. (a) False (b) True
40. 40.⚖️ 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

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