Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 224 · 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.True or false: a flower stem does not let water climb. (a) True (b) False
2. 2.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a glass marble (d) a flower stem
4. 4.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a mirror
6. 6.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of water
7. 7.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
9. 9.True or false: a paper towel does not let water climb. (a) True (b) False
10. 10.True or false: a cotton thread lets water climb up it. (a) True (b) False
11. 11.🔍 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 flower floats away (d) the water turns green
12. 12.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
13. 13.⚖️ 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 water (b) time for colour to show (c) the kind of flower (d) the length of the stem
14. 14.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
15. 15.True or false: a cotton thread does not let water climb. (a) False (b) True
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a paper towel (d) a glass marble
20. 20.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a rubber eraser (c) a glass marble (d) a piece of foil
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a flower stem (d) a piece of foil
22. 22.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a white flower
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) yeast
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
26. 26.🔮 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 stay white (c) they all turn green (d) they turn two colours
27. 27.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
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 kept the same. (a) True (b) False
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a magnet
30. 30.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a mirror (d) a magnet
32. 32.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a sugar cube
33. 33.True or false: a paper towel lets water climb up it. (a) True (b) False
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a flower stem
38. 38.⚖️ 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 measure it (c) we change it
39. 39.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a piece of chalk

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