Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 199 · 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.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
3. 3.⚖️ 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 room it stands in (c) the length of the stem
4. 4.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a sugar cube (d) a paper towel
5. 5.🔮 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 stay white (c) they fall off at once (d) they all turn green
6. 6.⚖️ 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 length of the stem (d) the room it stands in
7. 7.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
8. 8.⚖️ 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
9. 9.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a cotton thread (d) a paper towel
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a glass of water
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
13. 13.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a battery cell
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 keep it the same (c) we change it
16. 16.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
17. 17.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
18. 18.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a steel spoon
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a balloon (d) a glass of water
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a glass of water (d) a few hours of waiting
21. 21.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
22. 22.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) yeast
24. 24.⚖️ 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
25. 25.⚖️ 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 kind of flower (b) the amount of colour (c) the length of the stem (d) the room it stands in
26. 26.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
27. 27.⚖️ 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
28. 28.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) food colour (d) a balloon
32. 32.🧺 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 few hours of waiting
33. 33.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
34. 34.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a strip of cloth (d) a sugar cube
35. 35.🧺 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 balloon
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a cotton thread (d) a piece of chalk
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a few hours of waiting (d) turmeric powder
40. 40.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a piece of foil (d) a plastic ruler

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