Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 395 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
2. 2.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
4. 4.⚖️ 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 kind of flower
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
6. 6.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
7. 7.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a sugar cube (d) a strip of cloth
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a steel spoon (d) a rubber eraser
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a balloon (d) food colour
13. 13.⚖️ 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
14. 14.⚖️ 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 the one thing we change. (a) False (b) True
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a mirror
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.⚖️ 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
18. 18.🔮 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 all turn green (c) they fall off at once (d) they turn two colours
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
20. 20.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a cotton thread (d) a paper towel
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.True or false: a piece of chalk does not let water climb. (a) False (b) True
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a balloon (d) a magnet
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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a glass of water (d) food colour
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a glass marble
29. 29.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) turmeric powder (d) food colour
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a white flower (d) a glass of water
32. 32.🧺 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
33. 33.⚖️ 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 kept the same. (a) False (b) True
34. 34.⚖️ 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 amount of colour (b) the room it stands in (c) the amount of water (d) the length of the stem
35. 35.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🛟 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
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.True or false: a sugar cube does not let water climb. (a) False (b) True

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