Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 188 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a balloon (d) turmeric powder
2. 2.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
5. 5.🛟 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
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a paper towel (d) a cotton thread
8. 8.True or false: a plastic ruler does not let water climb. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a rubber eraser (d) a paper towel
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a magnet (d) a few hours of waiting
11. 11.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) food colour (d) turmeric powder
14. 14.🧺 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 battery cell (d) a glass of water
15. 15.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
16. 16.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ 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
18. 18.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) yeast (d) a few hours of waiting
20. 20.⚖️ 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 length of the stem (b) the amount of colour (c) the amount of water (d) the kind of flower
21. 21.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water (d) the amount of colour
22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a sugar cube
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a white flower
25. 25.🧺 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 mirror
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a cotton thread (d) a flower stem
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) food colour (d) a few hours of waiting
28. 28.⚖️ 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) time for colour to show (c) the amount of water
29. 29.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🔮 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
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a cotton thread
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 measure it (b) we change it (c) we keep it the same
33. 33.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a piece of foil
34. 34.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a battery cell (d) a white flower
36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
37. 37.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
39. 39.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
40. 40.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a steel spoon (d) a piece of foil

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