Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 334 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) a balloon
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a white flower
3. 3.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a piece of foil
4. 4.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a piece of foil
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a glass marble
6. 6.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
7. 7.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a glass marble (d) a plastic ruler
9. 9.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) turmeric powder (d) a glass of water
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? True or false: the amount of water is what we measure. (a) True (b) False
13. 13.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
14. 14.⚖️ 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 room it stands in (c) time for colour to show
15. 15.⚖️ 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
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
18. 18.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 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 magnet
20. 20.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a white flower
23. 23.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.⚖️ 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 the one thing we change. (a) True (b) False
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour
26. 26.True or false: a paper towel lets water climb up it. (a) False (b) True
27. 27.🌼 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
28. 28.⚖️ 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
29. 29.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a glass of water (d) a few hours of waiting
31. 31.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a paper towel (d) a steel spoon
33. 33.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
34. 34.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a flower stem (d) a glass marble
37. 37.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
38. 38.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
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.⚖️ 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

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