Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 620 · 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.⚖️ 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 room it stands in (b) the amount of water (c) time for colour to show (d) the length of the stem
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) yeast (d) a battery cell
3. 3.True or false: a piece of chalk lets water climb up it. (a) False (b) True
4. 4.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
6. 6.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
8. 8.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
10. 10.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
11. 11.True or false: a paper towel lets water climb up it. (a) False (b) True
12. 12.⚖️ 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 kind of flower (b) the amount of water (c) time for colour to show (d) the amount of colour
13. 13.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a steel spoon (d) a flower stem
15. 15.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
18. 18.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a few hours of waiting (d) food colour
20. 20.🌼 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
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.True or false: a plastic ruler lets water climb up it. (a) True (b) False
23. 23.🔍 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 flower floats away (d) the petals turn bluish
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a mirror (d) a battery cell
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) a white flower
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) a battery cell (d) a glass of water
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
29. 29.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
31. 31.⚖️ 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
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.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
34. 34.⚖️ 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) False (b) True
35. 35.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
36. 36.⚖️ 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 amount of colour
37. 37.💧 Which of these does not let water climb? (a) a piece of chalk (b) a piece of foil (c) a cotton thread (d) a paper towel
38. 38.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a paper towel (d) a cotton thread

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