Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 247 · 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.True or false: a sugar cube lets water climb up it. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a piece of chalk (d) a sugar cube
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour
4. 4.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a glass marble (d) a plastic ruler
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a glass of water (d) a battery cell
6. 6.True or false: a steel spoon lets water climb up it. (a) True (b) False
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
8. 8.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a steel spoon does not let water climb. (a) False (b) True
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
11. 11.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a mirror
16. 16.🔍 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
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a balloon
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
20. 20.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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
23. 23.⚖️ 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 water (b) the kind of flower (c) the length of the stem (d) the room it stands in
24. 24.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a rubber eraser (d) a glass marble
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.True or false: a flower stem lets water climb up it. (a) True (b) False
28. 28.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a glass marble (d) a steel spoon
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a paper towel
30. 30.True or false: a plastic ruler lets water climb up it. (a) True (b) False
31. 31.🔮 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 stay white (d) they all turn green
32. 32.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.⚖️ 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
34. 34.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a piece of chalk (d) a paper towel
35. 35.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) food colour (d) a magnet
37. 37.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
39. 39.⚖️ 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 the one thing we change. (a) False (b) True
40. 40.⚖️ 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

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