Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 713 · 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.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) turmeric powder
3. 3.True or false: a strip of cloth does not let water climb. (a) True (b) False
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a magnet
5. 5.🔮 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
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
8. 8.🧺 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
9. 9.🌼 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
10. 10.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a glass of water (d) a white flower
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a rubber eraser
15. 15.True or false: a rubber eraser does not let water climb. (a) False (b) True
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
19. 19.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
20. 20.⚖️ 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 kind of flower (c) the length of the stem (d) the amount of colour
21. 21.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
22. 22.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
23. 23.⚖️ 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) False (b) True
24. 24.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a steel spoon (d) a piece of foil
25. 25.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a paper towel
27. 27.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a strip of cloth (d) a glass marble
28. 28.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a plastic ruler (d) a sugar cube
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) food colour
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a mirror (d) a few hours of waiting
36. 36.⚖️ 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 water (b) the length of the stem (c) time for colour to show
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) yeast (d) a magnet
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
40. 40.⚖️ 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 measure it (c) we change it

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