Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 835 · 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) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
2. 2.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
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 length of the stem (c) the kind of flower
4. 4.⚖️ 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 what we measure. (a) True (b) False
5. 5.🧺 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 glass of water (d) a balloon
6. 6.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a paper towel (d) a sugar cube
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a cotton thread
11. 11.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a piece of chalk
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.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a flower stem
21. 21.⚖️ 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) True (b) False
22. 22.⚖️ 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 colour (b) the amount of water (c) the room it stands in (d) time for colour to show
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
24. 24.💧 Which of these does not let water climb? (a) a rubber eraser (b) a flower stem (c) a paper towel (d) a cotton thread
25. 25.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
26. 26.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) turmeric powder (d) yeast
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a balloon (d) a white flower
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) food colour
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.True or false: a cotton thread does not let water climb. (a) False (b) True
33. 33.True or false: a plastic ruler lets water climb up it. (a) False (b) True
34. 34.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.⚖️ 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 water (b) time for colour to show (c) the amount of colour (d) the length of the stem
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) food colour (d) a white flower
38. 38.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a glass of water (d) a magnet

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