Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 974 · 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 would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
2. 2.⚖️ 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
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a steel spoon
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 white flower (c) a glass of water (d) a balloon
5. 5.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
6. 6.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a piece of foil (d) a paper towel
7. 7.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of colour (d) the amount of water
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a piece of foil (d) a piece of chalk
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
12. 12.True or false: a glass marble does not let water climb. (a) True (b) False
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
15. 15.⚖️ 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 kind of flower (c) the amount of water (d) the length of the stem
16. 16.⚖️ 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) True (b) False
17. 17.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a paper towel (d) a glass marble
18. 18.🧺 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) turmeric powder (d) food colour
19. 19.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
20. 20.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a sugar cube (d) a flower stem
24. 24.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a piece of chalk (d) a strip of cloth
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a magnet (d) a battery cell
26. 26.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a piece of chalk (d) a glass marble
27. 27.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a steel spoon (d) a plastic ruler
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a glass of water (d) a white flower
29. 29.True or false: a plastic ruler lets water climb up it. (a) True (b) False
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) yeast (d) a white flower
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a piece of foil (d) a cotton thread
34. 34.True or false: a piece of foil lets water climb up it. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a strip of cloth (d) a rubber eraser
36. 36.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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
38. 38.True or false: a sugar cube does not let water climb. (a) True (b) False
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
40. 40.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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