Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 633 · 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.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
4. 4.⚖️ 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
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
8. 8.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a piece of chalk (d) a plastic ruler
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) a glass of water
10. 10.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) food colour (d) a glass of water
12. 12.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a strip of cloth (d) a cotton thread
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a mirror
15. 15.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a paper towel
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
20. 20.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
23. 23.True or false: a flower stem does not let water climb. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a sugar cube (d) a steel spoon
25. 25.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a piece of foil (d) a paper towel
26. 26.🧺 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 battery cell (d) a white flower
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the amount of water
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
31. 31.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
32. 32.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: a plastic ruler lets water climb up it. (a) True (b) False
34. 34.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a glass marble (d) a rubber eraser
37. 37.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
39. 39.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot

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