Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 212 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a strip of cloth (d) a paper towel
3. 3.True or false: a flower stem does not let water climb. (a) False (b) True
4. 4.🔮 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
5. 5.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 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) yeast (d) food colour
7. 7.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
9. 9.⚖️ 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 colour (b) time for colour to show (c) the length of the stem (d) the kind of flower
10. 10.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a strip of cloth
11. 11.True or false: a cotton thread does not let water climb. (a) True (b) False
12. 12.🛟 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
13. 13.⚖️ 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 amount of colour (c) the length of the stem
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
15. 15.🧺 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 battery cell
16. 16.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
17. 17.🔍 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 water turns green (d) the flower floats away
18. 18.⚖️ 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) True (b) False
19. 19.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the kind of flower (d) the amount of water
21. 21.🔮 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
22. 22.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a flower stem
23. 23.True or false: a cotton thread lets water climb up it. (a) True (b) False
24. 24.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a battery cell (d) yeast
29. 29.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a strip of cloth
30. 30.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
33. 33.🌼 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
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
35. 35.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a plastic ruler
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) food colour (d) a white flower
38. 38.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a flower stem (d) a piece of foil
39. 39.⚖️ 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
40. 40.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids