Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 811 · 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 a magnet for the coloured flower experiment? (a) needed (b) not needed
2. 2.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
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 magnet (d) a few hours of waiting
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem (d) the amount of colour
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
8. 8.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
10. 10.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a battery cell (d) a magnet
13. 13.🛟 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
14. 14.⚖️ 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) True (b) False
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
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) time for colour to show (b) the amount of water (c) the amount of colour (d) the kind of flower
18. 18.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a battery cell (d) a white flower
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
21. 21.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) yeast (d) a battery cell
23. 23.True or false: a piece of chalk lets water climb up it. (a) True (b) False
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a mirror (d) food colour
25. 25.⚖️ 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
26. 26.⚖️ 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 kept the same. (a) True (b) False
27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
28. 28.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a cotton thread
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
32. 32.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
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.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
35. 35.🧺 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 few hours of waiting (d) a mirror
36. 36.⚖️ 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 the one thing we change. (a) True (b) False
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
38. 38.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a glass marble (d) a steel spoon
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a rubber eraser (d) a piece of foil

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