Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 609 · 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.True or false: a cotton thread does not let water climb. (a) False (b) True
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
3. 3.⚖️ 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) True (b) False
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
5. 5.True or false: a sugar cube lets water climb up it. (a) False (b) True
6. 6.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a cotton thread (d) a piece of foil
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
10. 10.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
11. 11.True or false: a paper towel lets water climb up it. (a) False (b) True
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a white flower (d) a glass of water
13. 13.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a glass marble (d) a piece of foil
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 amount of colour (b) the length of the stem (c) the room it stands in (d) time for colour to show
16. 16.⚖️ 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
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
19. 19.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
20. 20.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the room it stands in
21. 21.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a steel spoon (d) a plastic ruler
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a balloon (d) yeast
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
24. 24.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
25. 25.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a piece of chalk (d) a strip of cloth
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) food colour
28. 28.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a flower stem (d) a glass marble
30. 30.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: a glass marble lets water climb up it. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: a sugar cube does not let water climb. (a) True (b) False
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) food colour (d) turmeric powder
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a white flower
37. 37.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a piece of chalk (d) a strip of cloth
39. 39.True or false: a piece of chalk does not let water climb. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a plastic ruler (d) a glass marble

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