Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 143 · 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.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a paper towel (d) a glass marble
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) a few hours of waiting
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 all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
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 kept the same. (a) False (b) True
5. 5.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
6. 6.⚖️ 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) True (b) False
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
8. 8.🧺 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 battery cell (d) a white flower
9. 9.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a glass marble lets water climb up it. (a) False (b) True
11. 11.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a paper towel
12. 12.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
13. 13.⚖️ 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) time for colour to show (c) the kind of flower
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
16. 16.True or false: a cotton thread does not let water climb. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we change it
18. 18.True or false: a glass marble does not let water climb. (a) False (b) True
19. 19.⚖️ 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 colour (c) time for colour to show
20. 20.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a piece of chalk (d) a strip of cloth
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
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.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 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) a glass of water (d) food colour
26. 26.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a rubber eraser
27. 27.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
28. 28.⚖️ 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 kept the same. (a) True (b) False
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
30. 30.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a cotton thread (d) a piece of chalk
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a white flower (d) turmeric powder
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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) time for colour to show (c) the amount of colour (d) the kind of flower
37. 37.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
38. 38.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.True or false: a rubber eraser does not let water climb. (a) False (b) True
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower

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