Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 208 · 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.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) food colour
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a battery cell (d) turmeric powder
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a paper towel (d) a plastic ruler
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
6. 6.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a strip of cloth (d) a flower stem
13. 13.True or false: a cotton thread does not let water climb. (a) True (b) False
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a glass marble
15. 15.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a piece of chalk
17. 17.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a steel spoon
18. 18.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
19. 19.True or false: a paper towel does not let water climb. (a) True (b) False
20. 20.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
21. 21.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
25. 25.⚖️ 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) the kind of flower (c) the amount of water (d) the length of the stem
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: a sugar cube lets water climb up it. (a) False (b) True
28. 28.🛟 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
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a mirror
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) turmeric powder (d) a battery cell
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a plastic ruler (d) a steel spoon
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) food colour (d) a white flower
39. 39.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False

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