Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 921 · 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.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a steel spoon (d) a glass marble
2. 2.🧺 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) food colour (d) turmeric powder
3. 3.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a steel spoon (d) a piece of foil
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
5. 5.⚖️ 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 room it stands in (c) the kind of flower (d) time for colour to show
6. 6.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a magnet (d) a white flower
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a steel spoon
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
13. 13.⚖️ 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
14. 14.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a plastic ruler (d) a piece of foil
15. 15.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
18. 18.🔮 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
19. 19.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a glass of water
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a paper towel (d) a piece of chalk
23. 23.🌼 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
24. 24.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a glass of water (d) yeast
26. 26.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
27. 27.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
28. 28.⚖️ 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 kind of flower (c) the length of the stem
29. 29.True or false: a piece of foil lets water climb up it. (a) True (b) False
30. 30.⚖️ 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
31. 31.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a sugar cube (d) a glass marble
40. 40.⚖️ 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 change it (c) we measure it

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