Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 36 · 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.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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) False (b) True
3. 3.⚖️ 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 amount of water (c) the kind of flower (d) the amount of colour
4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a piece of foil (d) a piece of chalk
5. 5.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
6. 6.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
7. 7.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
8. 8.🧺 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 balloon
9. 9.⚖️ 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
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a paper towel (d) a plastic ruler
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a magnet
13. 13.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a steel spoon (d) a glass marble
14. 14.True or false: a cotton thread does not let water climb. (a) True (b) False
15. 15.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a rubber eraser (d) a piece of chalk
16. 16.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a flower stem (d) a plastic ruler
17. 17.⚖️ 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 amount of colour (c) the length of the stem
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
20. 20.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
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.🌼 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
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
24. 24.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
26. 26.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a battery cell (d) a magnet
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
29. 29.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a cotton thread
30. 30.⚖️ 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
31. 31.⚖️ 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 what we measure. (a) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a mirror (d) turmeric powder
35. 35.⚖️ 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 amount of water (c) time for colour to show
36. 36.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a glass marble
37. 37.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False

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