Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 883 · 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.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a paper towel
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.⚖️ 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
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
6. 6.🧺 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 mirror
7. 7.⚖️ 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
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
10. 10.🔮 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
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a few hours of waiting (d) a white flower
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a balloon (d) turmeric powder
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
15. 15.True or false: a plastic ruler does not let water climb. (a) True (b) False
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a few hours of waiting (d) yeast
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🔍 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
19. 19.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
23. 23.True or false: a glass marble does not let water climb. (a) False (b) True
24. 24.⚖️ 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
25. 25.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
26. 26.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a steel spoon
27. 27.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a glass marble
28. 28.⚖️ 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
29. 29.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the room it stands in (d) the amount of colour
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a steel spoon
32. 32.⚖️ 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 measure it (b) we keep it the same (c) we change it
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.⚖️ 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) False (b) True
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
37. 37.True or false: a plastic ruler lets water climb up it. (a) True (b) False
38. 38.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
39. 39.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a steel spoon (d) a flower stem
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False

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