Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 976 · 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.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
2. 2.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a paper towel (d) a rubber eraser
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a glass marble
4. 4.🛟 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
5. 5.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
6. 6.🔮 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 fall off at once (c) they stay white (d) they all turn green
7. 7.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a glass marble (d) a paper towel
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a glass of water
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
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 what we measure. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a piece of foil
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a sugar cube
14. 14.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
15. 15.💧 Which of these does not let water climb? (a) a paper towel (b) a steel spoon (c) a cotton thread (d) a flower stem
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a magnet
17. 17.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
18. 18.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a steel spoon
19. 19.⚖️ 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
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.🔍 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
22. 22.True or false: a rubber eraser lets water climb up it. (a) False (b) True
23. 23.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a plastic ruler does not let water climb. (a) False (b) True
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
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 glass of water (d) a mirror
29. 29.True or false: a steel spoon does not let water climb. (a) False (b) True
30. 30.True or false: a rubber eraser does not let water climb. (a) True (b) False
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
32. 32.🌼 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
33. 33.⚖️ 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 kind of flower (c) the length of the stem
34. 34.True or false: a cotton thread does not let water climb. (a) True (b) False
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 length of the stem (b) the room it stands in (c) time for colour to show
36. 36.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a rubber eraser (d) a sugar cube
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a battery cell
39. 39.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a plastic ruler (d) a glass marble

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