Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 952 · 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 battery cell for the coloured flower experiment? (a) needed (b) not needed
2. 2.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
3. 3.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a flower stem (d) a paper towel
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a rubber eraser
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a white flower (d) a mirror
6. 6.🧺 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 battery cell (d) food colour
7. 7.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
8. 8.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
10. 10.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a cotton thread
11. 11.True or false: a glass marble does not let water climb. (a) True (b) False
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a magnet (d) yeast
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
16. 16.True or false: a cotton thread lets water climb up it. (a) False (b) True
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) yeast (d) a few hours of waiting
18. 18.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
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 the one thing we change. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a paper towel (d) a rubber eraser
23. 23.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a glass marble
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a cotton thread
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
27. 27.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
29. 29.True or false: a rubber eraser lets water climb up it. (a) True (b) False
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
33. 33.🧺 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 white flower (d) turmeric powder
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.⚖️ 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 keep it the same (b) we change it (c) we measure it
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a mirror (d) turmeric powder
37. 37.True or false: a glass of water is not 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) a mirror (b) a glass of water (c) a few hours of waiting (d) food colour
39. 39.⚖️ 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 measure it (c) we change it
40. 40.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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