Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 59 · 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 is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
2. 2.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a paper towel
3. 3.🔮 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 turn two colours (c) they stay white (d) they all turn green
4. 4.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
8. 8.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) food colour (d) a glass of water
10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a plastic ruler (d) a piece of foil
11. 11.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) food colour (d) a white flower
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a battery cell (d) a magnet
14. 14.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
15. 15.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) yeast
17. 17.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 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
19. 19.⚖️ 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
20. 20.True or false: a sugar cube does not let water climb. (a) True (b) False
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a rubber eraser
22. 22.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
23. 23.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 the one thing we change. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a cotton thread (d) a plastic ruler
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
27. 27.⚖️ 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 colour (b) the kind of flower (c) the room it stands in (d) the length of the stem
28. 28.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
29. 29.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a paper towel (d) a cotton thread
30. 30.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ 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) True (b) False
32. 32.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a paper towel (d) a rubber eraser
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 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
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a magnet (d) turmeric powder
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a paper towel (d) a strip of cloth
38. 38.🧺 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) a white flower (d) a battery cell
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) food colour

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