Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 859 · 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 piece of chalk does not let water climb. (a) True (b) False
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a glass of water (d) yeast
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
6. 6.True or false: a piece of foil does not let water climb. (a) True (b) False
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.⚖️ 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 room it stands in (b) time for colour to show (c) the kind of flower (d) the amount of colour
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a balloon (d) a mirror
10. 10.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
11. 11.🔍 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 petals turn bluish (d) the stem turns to ice
12. 12.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a piece of foil (d) a steel spoon
14. 14.⚖️ 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
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 change it (c) we keep it the same
16. 16.True or false: a rubber eraser lets water climb up it. (a) False (b) True
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
18. 18.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a piece of chalk (d) a piece of foil
20. 20.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.True or false: a strip of cloth does not let water climb. (a) False (b) True
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
24. 24.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
25. 25.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
26. 26.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a paper towel
27. 27.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
28. 28.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a piece of chalk (d) a cotton thread
32. 32.True or false: a cotton thread lets water climb up it. (a) False (b) True
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a cotton thread (d) a paper towel
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) a white flower
36. 36.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
38. 38.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a cotton thread
40. 40.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False

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