Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 586 · 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.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.⚖️ 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
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a steel spoon (d) a glass marble
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
5. 5.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.💧 Which of these lets water climb up it? (a) a sugar cube (b) a piece of foil (c) a rubber eraser (d) a glass marble
7. 7.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a glass marble
8. 8.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) turmeric powder (d) a few hours of waiting
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
12. 12.True or false: a flower stem lets water climb up it. (a) True (b) False
13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
14. 14.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
15. 15.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of water (d) the amount of colour
16. 16.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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) False (b) True
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a magnet (d) a glass of water
19. 19.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
20. 20.True or false: a rubber eraser lets water climb up it. (a) False (b) True
21. 21.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a flower stem (d) a glass marble
22. 22.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a plastic ruler (d) a glass marble
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a mirror (d) a balloon
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a sugar cube lets water climb up it. (a) True (b) False
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a magnet (d) a few hours of waiting
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a balloon
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a white flower (d) a glass of water
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
31. 31.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
32. 32.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.⚖️ 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) True (b) False
34. 34.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a steel spoon (d) a rubber eraser
38. 38.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
39. 39.⚖️ 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 kept the same. (a) True (b) False
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it

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