Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 819 · 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: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
2. 2.🔍 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
3. 3.True or false: a plastic ruler 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? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a battery cell (d) a glass of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) food colour
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
10. 10.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
12. 12.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a magnet (d) yeast
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a cotton thread (d) a paper towel
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.⚖️ 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 amount of water (c) time for colour to show (d) the room it stands in
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
19. 19.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) yeast (d) a mirror
24. 24.⚖️ 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 room it stands in
25. 25.True or false: a piece of chalk does not let water climb. (a) False (b) True
26. 26.True or false: a sugar cube does not let water climb. (a) True (b) False
27. 27.True or false: a steel spoon lets water climb up it. (a) True (b) False
28. 28.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
32. 32.🧺 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 few hours of waiting (d) turmeric powder
33. 33.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a strip of cloth (d) a glass marble
34. 34.True or false: a paper towel lets water climb up it. (a) True (b) False
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
36. 36.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a plastic ruler
37. 37.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a glass of water
39. 39.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
40. 40.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem

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