Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 612 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) a battery cell
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) turmeric powder (d) food colour
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
5. 5.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a white flower
7. 7.⚖️ 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 room it stands in (c) time for colour to show (d) the kind of flower
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 fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
9. 9.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a balloon
12. 12.True or false: a flower stem does not let water climb. (a) False (b) True
13. 13.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a piece of chalk (d) a steel spoon
15. 15.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
17. 17.⚖️ 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) True (b) False
18. 18.⚖️ 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 the one thing we change. (a) True (b) False
19. 19.⚖️ 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
20. 20.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a balloon (d) turmeric powder
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
26. 26.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
27. 27.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a cotton thread (d) a plastic ruler
31. 31.🔍 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 stem turns to ice (d) the water turns green
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a battery cell
34. 34.⚖️ 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 kind of flower
35. 35.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a magnet (d) a white flower
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a flower stem

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