Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 185 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) food colour
2. 2.⚖️ 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 room it stands in (c) the amount of colour (d) the kind of flower
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a cotton thread (d) a flower stem
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a white flower (d) food colour
12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a battery cell (d) a white flower
15. 15.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a battery cell
17. 17.True or false: a steel spoon does not let water climb. (a) True (b) False
18. 18.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
20. 20.True or false: a plastic ruler lets water climb up it. (a) True (b) False
21. 21.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
23. 23.⚖️ 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 amount of colour (b) the room it stands in (c) the length of the stem (d) the kind of flower
24. 24.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a piece of chalk does not let water climb. (a) False (b) True
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a balloon
27. 27.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a piece of chalk (d) a cotton thread
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
29. 29.True or false: a piece of foil lets water climb up it. (a) False (b) True
30. 30.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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
32. 32.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
34. 34.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
35. 35.⚖️ 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) time for colour to show (c) the room it stands in
36. 36.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a piece of foil
38. 38.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
39. 39.⚖️ 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 kind of flower (b) the amount of colour (c) the amount of water (d) the length of the stem
40. 40.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False

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