Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 840 · 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.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) yeast (d) a battery cell
3. 3.⚖️ 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 the one thing we change. (a) True (b) False
4. 4.⚖️ 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 water (c) time for colour to show
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
6. 6.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
7. 7.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) turmeric powder
9. 9.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) turmeric powder
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a few hours of waiting (d) a mirror
12. 12.⚖️ 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) False (b) True
13. 13.🧺 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
14. 14.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
15. 15.True or false: a sugar cube does not let water climb. (a) True (b) False
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) yeast
18. 18.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
19. 19.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
21. 21.⚖️ 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
22. 22.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
23. 23.⚖️ 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
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
26. 26.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
28. 28.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a flower stem lets water climb up it. (a) False (b) True
30. 30.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
31. 31.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
32. 32.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
33. 33.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) time for colour to show
34. 34.🧺 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 glass of water (d) yeast
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
37. 37.True or false: a sugar cube lets water climb up it. (a) False (b) True
38. 38.True or false: a piece of chalk does not let water climb. (a) False (b) True
39. 39.True or false: a paper towel lets water climb up it. (a) False (b) True
40. 40.⚖️ 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 kind of flower (b) the room it stands in (c) the length of the stem (d) time for colour to show

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