Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 524 · 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.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
4. 4.🔮 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 fall off at once (d) they turn two colours
5. 5.⚖️ 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 colour (b) the room it stands in (c) the kind of flower (d) the length of the stem
6. 6.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a rubber eraser (d) a glass marble
7. 7.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 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 battery cell
9. 9.⚖️ 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
10. 10.💧 Which of these lets water climb up it? (a) a flower stem (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) yeast (d) a battery cell
12. 12.True or false: a plastic ruler lets water climb up it. (a) True (b) False
13. 13.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
14. 14.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
15. 15.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
16. 16.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
20. 20.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a steel spoon (d) a piece of chalk
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a rubber eraser (d) a plastic ruler
23. 23.⚖️ 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) False (b) True
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) turmeric powder
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a mirror (d) a glass of water
31. 31.🔮 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
32. 32.True or false: a rubber eraser lets water climb up it. (a) True (b) False
33. 33.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a few hours of waiting (d) a magnet
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) food colour
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
40. 40.⚖️ 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

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