Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 175 · 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 food colour for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
3. 3.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a rubber eraser
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
8. 8.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a steel spoon
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
11. 11.True or false: a glass marble lets water climb up it. (a) True (b) False
12. 12.⚖️ 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 the one thing we change. (a) True (b) False
13. 13.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a magnet
17. 17.⚖️ 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 room it stands in (c) the length of the stem
18. 18.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a paper towel (d) a strip of cloth
19. 19.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
20. 20.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they stay white (d) they turn two colours
22. 22.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
24. 24.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.True or false: a sugar cube does not let water climb. (a) True (b) False
26. 26.True or false: a steel spoon does not let water climb. (a) False (b) True
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
28. 28.⚖️ 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
29. 29.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) yeast (d) a magnet
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 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 mirror (d) a white flower
35. 35.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.⚖️ 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
37. 37.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a paper towel
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a battery cell (d) a magnet
40. 40.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a cotton thread (d) a glass marble

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