Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 744 · 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 lets water climb up it. (a) True (b) False
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) food colour
3. 3.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not 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 balloon (c) food colour (d) a white flower
6. 6.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
8. 8.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a rubber eraser lets water climb up it. (a) False (b) True
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
11. 11.⚖️ 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) False (b) True
12. 12.⚖️ 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) the room it stands in (c) the amount of colour (d) time for colour to show
13. 13.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
14. 14.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.🔮 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 turn two colours (d) they stay white
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a battery cell (d) a mirror
19. 19.True or false: a steel spoon lets water climb up it. (a) False (b) True
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) food colour (d) a glass of water
22. 22.True or false: a sugar cube does not let water climb. (a) True (b) False
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (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) yeast (b) food colour (c) a glass of water (d) a white flower
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (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 lose water to air (d) petals like colour
27. 27.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 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) a magnet (d) a glass of water
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a flower stem (d) a cotton thread
30. 30.⚖️ 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 amount of colour (c) the length of the stem
31. 31.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 change it (b) we measure it (c) we keep it the same
33. 33.True or false: a piece of foil does not let water climb. (a) True (b) False
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a balloon (d) a magnet
35. 35.🧺 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
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a glass of water (d) a mirror
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
39. 39.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a flower stem (d) a steel spoon
40. 40.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a paper towel (d) a strip of cloth

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