Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 622 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
2. 2.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
4. 4.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) a glass of water
6. 6.True or false: a piece of foil does not let water climb. (a) True (b) False
7. 7.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
8. 8.⚖️ 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 room it stands in (b) the amount of colour (c) time for colour to show (d) the length of the stem
9. 9.True or false: a strip of cloth lets water climb up it. (a) True (b) False
10. 10.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a paper towel (d) a sugar cube
11. 11.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a plastic ruler (d) a steel spoon
12. 12.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (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 kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
17. 17.🧺 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 battery cell (d) a few hours of waiting
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a glass marble
19. 19.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
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 kept the same. (a) False (b) True
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) yeast (d) a white flower
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
23. 23.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
24. 24.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a paper towel (d) a rubber eraser
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a few hours of waiting (d) turmeric powder
27. 27.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a glass marble (d) a steel spoon
28. 28.True or false: a piece of chalk does not let water climb. (a) True (b) False
29. 29.🔮 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
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
31. 31.⚖️ 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 change it (c) we keep it the same
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? True or false: time for colour to show is kept the same. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a cotton thread
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
36. 36.⚖️ 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
37. 37.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a white flower (d) a glass of water
40. 40.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False

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