Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 823 · 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: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a paper towel (d) a cotton thread
3. 3.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a steel spoon (d) a plastic ruler
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
5. 5.True or false: a glass marble lets water climb up it. (a) False (b) True
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
7. 7.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a steel spoon (d) a piece of chalk
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a balloon (d) yeast
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
13. 13.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
14. 14.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
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 amount of water (b) the kind of flower (c) the amount of colour (d) the length of the stem
16. 16.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a steel spoon (d) a glass marble
18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a battery cell
20. 20.⚖️ 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) time for colour to show (c) the room it stands in (d) the amount of water
21. 21.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) turmeric powder (d) a glass of water
23. 23.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a glass marble (d) a steel spoon
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) food colour (d) a mirror
25. 25.⚖️ 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
26. 26.⚖️ 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 change it (c) we measure it
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
28. 28.True or false: a glass marble does not let water climb. (a) False (b) True
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
30. 30.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.⚖️ 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) False (b) True
32. 32.🛟 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
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 white flower (b) food colour (c) a few hours of waiting (d) yeast
35. 35.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
37. 37.💧 Dip a piece of chalk 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 cotton thread lets water climb up it. (a) False (b) True
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
40. 40.🔮 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 fall off at once (d) they turn two colours

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