Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 845 · 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 piece of foil does not let water climb. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a glass marble
3. 3.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a battery cell
9. 9.True or false: a piece of chalk lets water climb up it. (a) True (b) False
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a battery cell
12. 12.⚖️ 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 water (b) time for colour to show (c) the kind of flower (d) the amount of colour
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) food colour (d) a white flower
14. 14.True or false: a steel spoon does not let water climb. (a) False (b) True
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
17. 17.True or false: a flower stem does not let water climb. (a) True (b) False
18. 18.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
19. 19.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
20. 20.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a piece of chalk (d) a steel spoon
21. 21.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a sugar cube (d) a steel spoon
22. 22.True or false: a strip of cloth does not let water climb. (a) False (b) True
23. 23.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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) True (b) False
25. 25.True or false: a paper towel does not let water climb. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
27. 27.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
28. 28.⚖️ 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) True (b) False
29. 29.⚖️ 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) False (b) True
30. 30.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a plastic ruler (d) a cotton thread
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.⚖️ 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
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
37. 37.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
38. 38.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
40. 40.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a cotton thread (d) a rubber eraser

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