Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 387 · 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.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
2. 2.⚖️ 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 room it stands in (c) the kind of flower (d) time for colour to show
3. 3.True or false: a paper towel does not let water climb. (a) True (b) False
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a flower stem (d) a rubber eraser
6. 6.⚖️ 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 length of the stem (c) the amount of water
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
8. 8.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a piece of foil
11. 11.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
13. 13.True or false: a paper towel lets water climb up it. (a) False (b) True
14. 14.True or false: a cotton thread does not let water climb. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
16. 16.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
21. 21.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
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) True (b) False
23. 23.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a glass marble (d) a flower stem
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
26. 26.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a rubber eraser (d) a sugar cube
28. 28.True or false: a sugar cube does not let water climb. (a) False (b) True
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
31. 31.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.⚖️ 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
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
34. 34.True or false: a plastic ruler does not let water climb. (a) True (b) False
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
37. 37.True or false: a steel spoon lets water climb up it. (a) False (b) True
38. 38.True or false: a piece of foil does not let water climb. (a) True (b) False
39. 39.⚖️ 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
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a flower stem (d) a piece of foil

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