Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 743 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) time for colour to show (c) the amount of colour
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
3. 3.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) yeast (d) turmeric powder
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
6. 6.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
8. 8.🔮 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
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
10. 10.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a sugar cube
11. 11.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a paper towel (d) a flower stem
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a magnet (d) a mirror
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
15. 15.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of foil (c) a cotton thread (d) a piece of chalk
16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
17. 17.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
18. 18.⚖️ 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
19. 19.⚖️ 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) time for colour to show (c) the room it stands in (d) the kind of flower
20. 20.⚖️ 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 kept the same. (a) False (b) True
21. 21.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a piece of foil
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
25. 25.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a steel spoon (d) a piece of chalk
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
28. 28.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a rubber eraser lets water climb up it. (a) True (b) False
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
31. 31.True or false: a flower stem does not let water climb. (a) True (b) False
32. 32.⚖️ 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) False (b) True
33. 33.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the room it stands in (c) time for colour to show
36. 36.True or false: a strip of cloth lets water climb up it. (a) True (b) False
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) food colour (d) a mirror
38. 38.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower

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