Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 356 · 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 lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a paper towel
2. 2.⚖️ 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 room it stands in (b) time for colour to show (c) the amount of colour (d) the kind of flower
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (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 keep it the same (b) we measure it (c) we change it
5. 5.True or false: a rubber eraser lets water climb up it. (a) True (b) False
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) turmeric powder (d) a few hours of waiting
7. 7.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
9. 9.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a paper towel (d) a piece of foil
11. 11.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
12. 12.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a strip of cloth (d) a steel spoon
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a plastic ruler
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a rubber eraser (d) a piece of foil
22. 22.⚖️ 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
23. 23.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a flower stem (d) a piece of foil
25. 25.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
26. 26.True or false: a paper towel lets water climb up it. (a) False (b) True
27. 27.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
28. 28.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a sugar cube does not let water climb. (a) True (b) False
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a glass of water
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) food colour (d) turmeric powder
33. 33.🔍 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 petals turn bluish (d) the stem turns to ice
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 water”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🧺 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
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a mirror
37. 37.⚖️ 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
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a battery cell (d) a few hours of waiting
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a steel spoon (d) a piece of foil
40. 40.⚖️ 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) False (b) True

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