Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 451 · 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 piece of foil does not let water climb. (a) False (b) True
2. 2.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a glass marble
5. 5.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
6. 6.True or false: a sugar cube lets water climb up it. (a) False (b) True
7. 7.True or false: a piece of chalk lets water climb up it. (a) False (b) True
8. 8.🔍 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
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
13. 13.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a sugar cube
14. 14.True or false: a flower stem lets water climb up it. (a) True (b) False
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
17. 17.⚖️ 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) False (b) True
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) yeast (d) a white flower
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a paper towel (d) a flower stem
21. 21.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
22. 22.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
24. 24.True or false: a plastic ruler does not let water climb. (a) False (b) True
25. 25.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
26. 26.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
27. 27.⚖️ 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) True (b) False
28. 28.🧺 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 white flower (d) a battery cell
29. 29.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a cotton thread (d) a flower stem
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a white flower
35. 35.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a paper towel lets water climb up it. (a) False (b) True
37. 37.True or false: a glass marble lets water climb up it. (a) False (b) True
38. 38.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
39. 39.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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