Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 591 · 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 does not let water climb? (a) a strip of cloth (b) a flower stem (c) a steel spoon (d) a piece of chalk
2. 2.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a sugar cube (d) a piece of chalk
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a flower stem
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 measure it (b) we keep it the same (c) we change it
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
7. 7.True or false: a plastic ruler does not let water climb. (a) True (b) False
8. 8.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
9. 9.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a glass marble (d) a piece of chalk
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
11. 11.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) turmeric powder (d) a battery cell
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a white flower (d) food colour
14. 14.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 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) food colour (d) a balloon
16. 16.⚖️ 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
17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a sugar cube (d) a rubber eraser
18. 18.⚖️ 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
19. 19.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a few hours of waiting (d) a glass of water
22. 22.⚖️ 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
23. 23.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
25. 25.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
26. 26.⚖️ 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 amount of colour (c) time for colour to show
27. 27.True or false: a strip of cloth lets water climb up it. (a) True (b) False
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they fall off at once (d) they all turn green
30. 30.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a strip of cloth (d) a rubber eraser
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) yeast (d) a balloon
32. 32.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a magnet (d) a mirror
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a piece of foil (d) a glass marble
38. 38.⚖️ 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) time for colour to show (c) the amount of water
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a glass of water (d) food colour
40. 40.⚖️ 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

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