Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 981 · 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 battery cell (c) a glass of water (d) food colour
2. 2.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
4. 4.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a strip of cloth (d) a steel spoon
5. 5.True or false: a glass marble does not let water climb. (a) True (b) False
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of foil (d) a paper towel
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
9. 9.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
10. 10.⚖️ 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 the one thing we change. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
13. 13.🔮 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 fall off at once (d) they turn two colours
14. 14.True or false: a strip of cloth does not let water climb. (a) False (b) True
15. 15.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
16. 16.🔮 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
17. 17.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a mirror
20. 20.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show (d) the kind of flower
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
22. 22.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
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 water”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: a paper towel lets water climb up it. (a) False (b) True
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
26. 26.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
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 amount of water (c) the length of the stem
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
31. 31.🧺 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) a white flower (d) food colour
32. 32.True or false: a steel spoon lets water climb up it. (a) True (b) False
33. 33.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a strip of cloth (d) a piece of foil
35. 35.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.⚖️ 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
37. 37.🧺 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) food colour
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a strip of cloth

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