Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 407 · 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 steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a few hours of waiting
3. 3.True or false: a cotton thread lets water climb up it. (a) False (b) True
4. 4.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a plastic ruler (d) a rubber eraser
8. 8.⚖️ 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 kept the same. (a) True (b) False
9. 9.⚖️ 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) False (b) True
10. 10.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
11. 11.⚖️ 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 kind of flower (c) time for colour to show
12. 12.True or false: a flower stem lets water climb up it. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a rubber eraser
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.⚖️ 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 room it stands in (d) the length of the stem
16. 16.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) capillary action (d) evaporation
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) a white flower
21. 21.True or false: a cotton thread does not let water climb. (a) False (b) True
22. 22.⚖️ 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) True (b) False
23. 23.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
24. 24.True or false: a sugar cube lets water climb up it. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.⚖️ 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
27. 27.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
28. 28.True or false: a piece of foil lets water climb up it. (a) False (b) True
29. 29.🧺 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) turmeric powder
30. 30.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a balloon (d) a white flower
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a flower stem
33. 33.⚖️ 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) the kind of flower (c) the length of the stem (d) time for colour to show
34. 34.🧺 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) food colour (d) turmeric powder
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 room it stands in (b) the length of the stem (c) time for colour to show
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a white flower
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
40. 40.⚖️ 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) False (b) True

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