Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 644 · 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? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a piece of foil (d) a steel spoon
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
6. 6.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a few hours of waiting (d) food colour
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
9. 9.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
10. 10.⚖️ 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 length of the stem (b) the kind of flower (c) the amount of colour (d) time for colour to show
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🧺 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) a magnet
15. 15.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a flower stem (d) a cotton thread
18. 18.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
21. 21.🌼 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
22. 22.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) the amount of colour
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) turmeric powder
25. 25.⚖️ 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
26. 26.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
28. 28.True or false: a piece of chalk does not let water climb. (a) False (b) True
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
31. 31.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a piece of chalk (d) a paper towel
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) turmeric powder (d) a white flower
33. 33.True or false: a sugar cube lets water climb up it. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a steel spoon (d) a glass marble
35. 35.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a white flower (d) food colour
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a cotton thread (d) a paper towel
39. 39.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue

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