Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 203 · 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.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a piece of foil (d) a plastic ruler
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
4. 4.True or false: a cotton thread does not let water climb. (a) True (b) False
5. 5.⚖️ 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 length of the stem (b) the room it stands in (c) the kind of flower (d) time for colour to show
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) yeast
7. 7.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
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 turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
9. 9.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
11. 11.True or false: a sugar cube lets water climb up it. (a) False (b) True
12. 12.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
13. 13.⚖️ 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 what we measure. (a) False (b) True
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) yeast
15. 15.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
16. 16.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
17. 17.True or false: a rubber eraser does not let water climb. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a paper towel (d) a piece of foil
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a white flower
21. 21.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a piece of foil
22. 22.True or false: a piece of foil does not let water climb. (a) True (b) False
23. 23.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a piece of chalk (d) a rubber eraser
24. 24.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a cotton thread lets water climb up it. (a) True (b) False
26. 26.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
28. 28.True or false: a strip of cloth does not let water climb. (a) True (b) False
29. 29.⚖️ 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
30. 30.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
32. 32.⚖️ 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) the length of the stem (d) time for colour to show
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a magnet
34. 34.🧺 Do we need food colour 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 “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a balloon (d) a battery cell
38. 38.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a cotton thread (d) a strip of cloth
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a magnet (d) a battery cell

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