Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 154 · 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) the petals turn red (c) the flower glows (d) no colour change
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a battery cell (d) a glass of water
3. 3.⚖️ 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 colour (b) time for colour to show (c) the room it stands in (d) the kind of flower
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a battery cell
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a few hours of waiting (d) turmeric powder
9. 9.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a flower stem (d) a plastic ruler
10. 10.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a battery cell (d) turmeric powder
13. 13.🌼 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
14. 14.🛟 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
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
17. 17.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
19. 19.⚖️ 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 kept the same. (a) False (b) True
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
22. 22.🧺 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 white flower (d) a magnet
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a piece of foil
24. 24.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
25. 25.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a strip of cloth
26. 26.⚖️ 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) time for colour to show (b) the amount of water (c) the length of the stem (d) the room it stands in
27. 27.⚖️ 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 kept the same. (a) True (b) False
28. 28.🔮 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 turn two colours (c) they all turn green (d) they stay white
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.True or false: a plastic ruler does not let water climb. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a paper towel
32. 32.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: a sugar cube does not let water climb. (a) True (b) False
34. 34.True or false: a steel spoon does not let water climb. (a) True (b) False
35. 35.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a sugar cube (d) a steel spoon
36. 36.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
38. 38.💧 Which of these does not let water climb? (a) a glass marble (b) a piece of chalk (c) a strip of cloth (d) a sugar cube
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True

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