Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 685 · 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.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
7. 7.True or false: a piece of foil does not let water climb. (a) True (b) False
8. 8.🧺 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
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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 colour
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
14. 14.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
16. 16.True or false: a steel spoon does not let water climb. (a) False (b) True
17. 17.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a steel spoon (c) a plastic ruler (d) a piece of foil
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
19. 19.🧺 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
20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) food colour
24. 24.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 kept the same. (a) True (b) False
27. 27.⚖️ 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) False (b) True
28. 28.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
29. 29.🔮 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
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a magnet (d) a white flower
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) yeast
32. 32.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
33. 33.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a magnet (d) food colour
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a piece of foil (d) a flower stem
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a glass of water (d) yeast
40. 40.True or false: a sugar cube does not let water climb. (a) True (b) False

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