Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 139 · 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 measure it (c) we keep it the same
3. 3.True or false: a glass of water is not needed for the coloured flower experiment. (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 the one thing we change? (a) the room it stands in (b) time for colour to show (c) the kind of flower (d) the length of the stem
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a battery cell (d) a mirror
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a paper towel (d) a plastic ruler
8. 8.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
9. 9.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a strip of cloth (d) a paper towel
10. 10.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
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 colour”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.⚖️ 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 what we measure. (a) True (b) False
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) turmeric powder (d) a battery cell
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a battery cell (d) a white flower
19. 19.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a cotton thread
20. 20.True or false: a rubber eraser lets water climb up it. (a) False (b) True
21. 21.⚖️ 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) False (b) True
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) turmeric powder (d) a mirror
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a mirror
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) food colour (d) a mirror
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
27. 27.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
28. 28.True or false: a paper towel does not let water climb. (a) True (b) False
29. 29.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🔮 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 fall off at once (c) they stay white (d) they all turn green
31. 31.⚖️ 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) False (b) True
32. 32.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
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) time for colour to show (b) the length of the stem (c) the kind of flower (d) the amount of colour
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) food colour (d) a white flower
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
38. 38.⚖️ 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
39. 39.True or false: a steel spoon does not let water climb. (a) True (b) False
40. 40.🧺 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 balloon

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