Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 587 · 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 does not let water climb? (a) a paper towel (b) a piece of foil (c) a cotton thread (d) a piece of chalk
2. 2.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
3. 3.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
6. 6.True or false: a flower stem lets water climb up it. (a) False (b) True
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water
8. 8.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a steel spoon (d) a cotton thread
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a white flower
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
12. 12.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
13. 13.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
14. 14.⚖️ 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) False (b) True
15. 15.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a few hours of waiting (d) a white flower
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a white flower (d) food colour
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
22. 22.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the kind of flower
23. 23.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a sugar cube (d) a paper towel
24. 24.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
26. 26.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a rubber eraser (d) a piece of foil
30. 30.⚖️ 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
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a few hours of waiting (d) a white flower
34. 34.🔮 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 all turn green (c) they stay white (d) they fall off at once
35. 35.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a sugar cube (d) a flower stem
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a few hours of waiting (d) a glass of water
38. 38.True or false: a piece of foil lets water climb up it. (a) True (b) False
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
40. 40.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True

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