Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 469 · 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.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
5. 5.🔍 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
6. 6.True or false: a piece of chalk lets water climb up it. (a) True (b) False
7. 7.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a flower stem (d) a sugar cube
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a mirror (d) food colour
10. 10.🧺 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) a balloon (d) a glass of water
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (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 room it stands in (c) time for colour to show (d) the amount of water
13. 13.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
14. 14.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a mirror (d) a few hours of waiting
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) a glass of water (d) a battery cell
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
21. 21.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
23. 23.⚖️ 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
24. 24.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a paper towel (d) a glass marble
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
26. 26.⚖️ 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 what we measure. (a) False (b) True
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) food colour
32. 32.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
34. 34.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a plastic ruler
36. 36.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of colour
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a strip of cloth (d) a flower stem
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a magnet (d) a mirror

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