Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 972 · 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.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a white flower
5. 5.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
6. 6.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
8. 8.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a paper towel lets water climb up it. (a) True (b) False
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a white flower (d) food colour
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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) time for colour to show (b) the kind of flower (c) the length of the stem (d) the amount of colour
18. 18.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
19. 19.True or false: a plastic ruler lets water climb up it. (a) False (b) True
20. 20.⚖️ 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 the one thing we change. (a) False (b) True
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a strip of cloth (d) a piece of foil
23. 23.True or false: a glass marble lets water climb up it. (a) False (b) True
24. 24.🧺 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) yeast
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a battery cell (d) a few hours of waiting
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
29. 29.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a cotton thread
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a battery cell (d) food colour
31. 31.⚖️ 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 room it stands in (b) time for colour to show (c) the amount of water (d) the length of the stem
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a few hours of waiting
33. 33.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
34. 34.⚖️ 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) True (b) False
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) yeast (d) a balloon
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
38. 38.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a rubber eraser
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens

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