Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 438 · 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 needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a glass marble (d) a strip of cloth
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a glass of water (d) a few hours of waiting
6. 6.True or false: a plastic ruler does not let water climb. (a) True (b) False
7. 7.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) time for colour to show
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) food colour (d) a mirror
9. 9.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a glass marble
10. 10.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
11. 11.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
12. 12.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
13. 13.⚖️ 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 kept the same. (a) True (b) False
14. 14.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a piece of chalk does not let water climb. (a) False (b) True
16. 16.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.⚖️ 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
18. 18.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.True or false: a sugar cube does not let water climb. (a) True (b) False
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
22. 22.⚖️ 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) True (b) False
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
24. 24.🌼 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
25. 25.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a few hours of waiting (d) a balloon
28. 28.⚖️ 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 amount of colour (b) time for colour to show (c) the kind of flower (d) the amount of water
29. 29.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
30. 30.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
31. 31.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a piece of foil (d) a steel spoon
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a glass of water
37. 37.True or false: a rubber eraser lets water climb up it. (a) True (b) False
38. 38.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) yeast (d) a balloon

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