Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 85 · 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 is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
2. 2.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
3. 3.⚖️ 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 kept the same. (a) False (b) True
4. 4.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🔮 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
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a glass of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a few hours of waiting (d) food colour
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
10. 10.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
11. 11.⚖️ 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
12. 12.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) food colour (d) a glass of water
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
18. 18.⚖️ 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) True (b) False
19. 19.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a glass marble (d) a strip of cloth
20. 20.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a paper towel (d) a piece of foil
21. 21.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
22. 22.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.⚖️ 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) the length of the stem (c) the amount of water (d) time for colour to show
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a steel spoon
26. 26.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
27. 27.🔮 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 stay white (c) they all turn green (d) they fall off at once
28. 28.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
29. 29.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a piece of foil
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
33. 33.True or false: a sugar cube does not let water climb. (a) False (b) True
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a glass of water (d) a magnet
37. 37.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
38. 38.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a steel spoon (d) a plastic ruler
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a piece of foil does not let water climb. (a) False (b) True

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