Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 836 · 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 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
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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.True or false: a steel spoon does not let water climb. (a) False (b) True
6. 6.🔮 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 turn two colours (c) they all turn green (d) they stay white
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
9. 9.🧺 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
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a rubber eraser (d) a piece of foil
15. 15.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.⚖️ 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
17. 17.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the kind of flower
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a few hours of waiting (d) a white flower
19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a flower stem
20. 20.⚖️ 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) False (b) True
21. 21.⚖️ 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 amount of water (c) the length of the stem (d) the kind of flower
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) food colour (d) a few hours of waiting
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) yeast (d) a battery cell
25. 25.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a piece of foil
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a paper towel (d) a flower stem
31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
32. 32.🛟 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
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a flower stem (d) a plastic ruler
34. 34.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
35. 35.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
36. 36.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔮 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
39. 39.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed

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