Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 711 · 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.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
2. 2.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
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 what we measure. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a cotton thread (d) a piece of foil
6. 6.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
7. 7.⚖️ 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 water (b) the length of the stem (c) time for colour to show
8. 8.🔮 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
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 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 magnet (d) food colour
13. 13.True or false: a piece of chalk lets water climb up it. (a) True (b) False
14. 14.🧺 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) a balloon
15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a paper towel (d) a piece of foil
16. 16.🔮 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 all turn green (d) they turn two colours
17. 17.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
18. 18.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a piece of foil (d) a plastic ruler
19. 19.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a strip of cloth
21. 21.⚖️ 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 what we measure. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a piece of foil (d) a strip of cloth
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
24. 24.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a piece of chalk (d) a sugar cube
25. 25.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
28. 28.⚖️ 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 what we measure. (a) False (b) True
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a battery cell (d) a white flower
30. 30.⚖️ 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
31. 31.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
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) turmeric powder (d) a glass of water
35. 35.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
36. 36.True or false: a cotton thread does not let water climb. (a) False (b) True
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a flower stem (d) a piece of foil
38. 38.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a white flower (d) food colour
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) turmeric powder

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