Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 788 · 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 needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) food colour
2. 2.⚖️ 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) time for colour to show (c) the length of the stem
3. 3.⚖️ 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 the one thing we change. (a) False (b) True
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
5. 5.🔮 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
6. 6.True or false: a paper towel does not let water climb. (a) False (b) True
7. 7.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a rubber eraser (d) a glass marble
8. 8.⚖️ 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 kind of flower
9. 9.🔮 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
10. 10.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a sugar cube
11. 11.⚖️ 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 water (b) time for colour to show (c) the length of the stem (d) the kind of flower
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
14. 14.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
15. 15.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
16. 16.True or false: a cotton thread lets water climb up it. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a flower stem (d) a steel spoon
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
20. 20.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a steel spoon
21. 21.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a mirror (d) a magnet
23. 23.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a paper towel
24. 24.⚖️ 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) False (b) True
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
26. 26.True or false: a piece of foil lets water climb up it. (a) True (b) False
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
28. 28.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) a battery cell (d) a magnet
31. 31.True or false: a flower stem does not let water climb. (a) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
33. 33.🛟 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
34. 34.⚖️ 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 room it stands in (d) the amount of colour
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
37. 37.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 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
39. 39.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
40. 40.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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