Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 829 · 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 steel spoon lets water climb up it. (a) False (b) True
2. 2.⚖️ 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
3. 3.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.⚖️ 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 change it (c) we measure it
6. 6.True or false: a flower stem does not let water climb. (a) False (b) True
7. 7.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a glass of water
9. 9.True or false: a rubber eraser does not let water climb. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a plastic ruler (d) a steel spoon
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) turmeric powder (d) a magnet
12. 12.🧺 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) food colour (d) a magnet
13. 13.🧺 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) yeast
14. 14.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🔮 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
16. 16.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a glass marble (d) a cotton thread
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a white flower (d) food colour
18. 18.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a magnet (d) yeast
20. 20.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) turmeric powder
22. 22.🌼 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
23. 23.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.⚖️ 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 water (b) the length of the stem (c) time for colour to show (d) the room it stands in
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
26. 26.True or false: a steel spoon does not let water climb. (a) True (b) False
27. 27.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
28. 28.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a cotton thread (d) a glass marble
29. 29.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
30. 30.🧺 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 mirror (d) a white flower
31. 31.🔍 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
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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) False (b) True
34. 34.⚖️ 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) True (b) False
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
38. 38.True or false: a strip of cloth does not let water climb. (a) True (b) False
39. 39.True or false: a rubber eraser lets water climb up it. (a) False (b) True
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a cotton thread (d) a plastic ruler

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