Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 183 · 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.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
3. 3.🔮 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 stay white (c) they all turn green (d) they fall off at once
4. 4.🧺 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) yeast (d) food colour
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a cotton thread (d) a rubber eraser
6. 6.🧺 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) a glass of water (d) turmeric powder
7. 7.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a strip of cloth
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
9. 9.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
10. 10.⚖️ 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 kept the same. (a) True (b) False
11. 11.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a mirror (d) yeast
13. 13.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a balloon (d) a mirror
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a sugar cube (d) a paper towel
19. 19.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
20. 20.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
22. 22.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a strip of cloth (d) a piece of foil
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a glass of water (d) a few hours of waiting
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 change it (c) we keep it the same
25. 25.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a flower stem (d) a glass marble
27. 27.True or false: a flower stem does not let water climb. (a) True (b) False
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) food colour
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a balloon (d) yeast
32. 32.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a strip of cloth (d) a plastic ruler
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) turmeric powder (d) a few hours of waiting
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
37. 37.⚖️ 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
38. 38.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ 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 room it stands in (c) the length of the stem (d) the amount of colour

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