Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 551 · 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 sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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 what we measure. (a) False (b) True
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) yeast (d) a glass of water
6. 6.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a white flower
9. 9.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
10. 10.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a mirror (d) a white flower
12. 12.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
13. 13.⚖️ 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 change it (c) we measure it
14. 14.True or false: a sugar cube does not let water climb. (a) False (b) True
15. 15.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.⚖️ 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) the amount of colour (d) time for colour to show
17. 17.True or false: a sugar cube lets water climb up it. (a) True (b) False
18. 18.True or false: a strip of cloth lets water climb up it. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a steel spoon (d) a plastic ruler
20. 20.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 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
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
24. 24.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a strip of cloth (d) a cotton thread
25. 25.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a rubber eraser (c) a piece of foil (d) a plastic ruler
26. 26.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🛟 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
28. 28.True or false: a cotton thread lets water climb up it. (a) False (b) True
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 fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a plastic ruler (d) a steel spoon
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.⚖️ 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) time for colour to show (c) the length of the stem
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a glass of water (d) a few hours of waiting
35. 35.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
36. 36.🔮 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
37. 37.⚖️ 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 kept the same. (a) True (b) False
38. 38.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a strip of cloth (d) a sugar cube
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) yeast (d) turmeric powder
40. 40.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the kind of flower

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