Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 553 · 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.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
2. 2.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
3. 3.🔮 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
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
5. 5.⚖️ 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 room it stands in (d) the amount of colour
6. 6.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
8. 8.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a flower stem (d) a piece of chalk
9. 9.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
14. 14.⚖️ 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 what we measure. (a) True (b) False
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 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 white flower (d) a balloon
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a magnet (d) a few hours of waiting
20. 20.⚖️ 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
21. 21.True or false: a plastic ruler does not let water climb. (a) True (b) False
22. 22.⚖️ 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) False (b) True
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a flower stem (d) a glass marble
24. 24.⚖️ 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 what we measure. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a paper towel (d) a plastic ruler
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
28. 28.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a mirror (d) a white flower
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) turmeric powder
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) yeast (d) a glass of water
33. 33.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a steel spoon lets water climb up it. (a) True (b) False
37. 37.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a flower stem (d) a plastic ruler
38. 38.⚖️ 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
39. 39.🔮 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 fall off at once (c) they all turn green (d) they stay white
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a battery cell

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