Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 810 · 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.🔮 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 stay white (c) they all turn green (d) they turn two colours
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
3. 3.🧺 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) food colour
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a flower stem
7. 7.⚖️ 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
8. 8.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a paper towel (d) a cotton thread
10. 10.🔮 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
11. 11.⚖️ 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 length of the stem (c) the room it stands in
12. 12.True or false: a plastic ruler does not let water climb. (a) True (b) False
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a glass of water (d) a mirror
14. 14.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.True or false: a strip of cloth lets water climb up it. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
18. 18.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a cotton thread (d) a strip of cloth
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a piece of foil
20. 20.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
21. 21.True or false: a piece of chalk does not let water climb. (a) True (b) False
22. 22.True or false: a battery cell is not 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 amount of water is the one thing we change. (a) False (b) True
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
25. 25.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a cotton thread
26. 26.⚖️ 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) False (b) True
27. 27.💧 Which of these does not let water climb? (a) a paper towel (b) a rubber eraser (c) a piece of chalk (d) a strip of cloth
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.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a rubber eraser (d) a plastic ruler
32. 32.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
33. 33.🌼 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
34. 34.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
40. 40.⚖️ 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 kind of flower (c) the amount of colour (d) the amount of water

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