Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 315 · 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.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔮 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
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) food colour
5. 5.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a glass marble
6. 6.⚖️ 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
7. 7.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
9. 9.True or false: a rubber eraser does not let water climb. (a) False (b) True
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) yeast
12. 12.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
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 fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
14. 14.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
15. 15.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a glass marble
17. 17.⚖️ 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 amount of water
18. 18.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a few hours of waiting
21. 21.⚖️ 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 amount of water (b) the room it stands in (c) time for colour to show (d) the length of the stem
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
24. 24.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: a piece of foil does not let water climb. (a) True (b) False
27. 27.⚖️ 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
28. 28.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
31. 31.🌼 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
32. 32.True or false: a plastic ruler does not let water climb. (a) False (b) True
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a battery cell
34. 34.True or false: a strip of cloth does not let water climb. (a) True (b) False
35. 35.True or false: a sugar cube lets water climb up it. (a) False (b) True
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) food colour
37. 37.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a cotton thread (d) a strip of cloth
38. 38.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.True or false: a cotton thread lets water climb up it. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a glass marble (d) a piece of chalk

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