Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 718 · 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.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show
3. 3.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) a white flower
7. 7.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a glass of water (d) a few hours of waiting
9. 9.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
10. 10.⚖️ 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 what we measure. (a) True (b) False
11. 11.⚖️ 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 the one thing we change. (a) True (b) False
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
13. 13.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a steel spoon (d) a plastic ruler
15. 15.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a cotton thread
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a balloon (d) a glass of water
17. 17.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a glass marble (d) a strip of cloth
18. 18.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) food colour
22. 22.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
23. 23.🧺 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
24. 24.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a magnet
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a piece of foil (d) a flower stem
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.True or false: a cotton thread does not let water climb. (a) False (b) True
29. 29.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a steel spoon
30. 30.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
33. 33.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a white flower (d) food colour
35. 35.⚖️ 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 water (b) the length of the stem (c) time for colour to show
36. 36.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a steel spoon (d) a rubber eraser
37. 37.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a strip of cloth
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
39. 39.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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