Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 740 · 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.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a glass marble
3. 3.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
4. 4.🛟 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
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
6. 6.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
7. 7.True or false: a steel spoon does not let water climb. (a) False (b) True
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
9. 9.⚖️ 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 colour (b) the length of the stem (c) time for colour to show
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the length of the stem (c) time for colour to show (d) the room it stands in
12. 12.⚖️ 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
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
14. 14.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
15. 15.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) a white flower
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a magnet (d) turmeric powder
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a mirror (d) a glass of water
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a magnet (d) food colour
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a strip of cloth (d) a piece of chalk
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a mirror (d) a glass of water
28. 28.True or false: a sugar cube does not let water climb. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a mirror (d) a battery cell
35. 35.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a piece of chalk (d) a cotton thread
36. 36.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) the amount of colour (c) the length of the stem (d) time for colour to show
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower

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