Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 332 · 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 of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a mirror (d) a white flower
2. 2.True or false: a piece of chalk lets water climb up it. (a) True (b) False
3. 3.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
6. 6.True or false: a flower stem lets water climb up it. (a) False (b) True
7. 7.⚖️ 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
8. 8.⚖️ 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 what we measure. (a) True (b) False
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) yeast
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.True or false: a piece of foil lets water climb up it. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a steel spoon
13. 13.🔮 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
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
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 kind of flower (b) the room it stands in (c) the length of the stem (d) time for colour to show
16. 16.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a cotton thread (d) a strip of cloth
17. 17.🧺 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) turmeric powder
18. 18.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a piece of foil (d) a rubber eraser
19. 19.True or false: a piece of foil does not let water climb. (a) False (b) True
20. 20.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.True or false: a steel spoon does not let water climb. (a) False (b) True
22. 22.True or false: a sugar cube does not let water climb. (a) False (b) True
23. 23.🔮 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 stay white (c) they all turn green (d) they fall off at once
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a mirror (d) a few hours of waiting
25. 25.True or false: a paper towel does not let water climb. (a) False (b) True
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a mirror (d) a glass of water
29. 29.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a flower stem (d) a strip of cloth
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
32. 32.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.⚖️ 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 kind of flower (d) the room it stands in
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a glass of water (d) a white flower
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a white flower (d) a few hours of waiting
39. 39.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) turmeric powder (d) food colour

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