Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 534 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a few hours of waiting (d) a glass of water
2. 2.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a paper towel (d) a piece of foil
3. 3.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a mirror (d) a glass of water
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
8. 8.True or false: a piece of chalk lets water climb up it. (a) True (b) False
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a flower stem
10. 10.⚖️ 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 length of the stem (c) the amount of water (d) time for colour to show
11. 11.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
12. 12.True or false: a paper towel lets water climb up it. (a) False (b) True
13. 13.🌼 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
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a glass of water (d) food colour
17. 17.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) yeast (d) turmeric powder
20. 20.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
21. 21.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a rubber eraser
22. 22.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a glass marble (d) a paper towel
23. 23.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 Do we need yeast 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 battery cell (b) a few hours of waiting (c) a white flower (d) a glass of water
26. 26.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ 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) time for colour to show (c) the amount of colour
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
29. 29.🧺 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) a mirror
30. 30.⚖️ 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 kind of flower (c) time for colour to show
31. 31.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
32. 32.True or false: a flower stem does not let water climb. (a) True (b) False
33. 33.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
34. 34.True or false: a plastic ruler does not let water climb. (a) False (b) True
35. 35.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a cotton thread (d) a piece of foil
37. 37.True or false: a piece of chalk does not let water climb. (a) False (b) True
38. 38.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 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) yeast
40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a flower stem (c) a paper towel (d) a cotton thread

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