Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 730 · 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.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
3. 3.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.💧 Which of these lets water climb up it? (a) a paper towel (b) a rubber eraser (c) a steel spoon (d) a plastic ruler
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
6. 6.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a magnet (d) turmeric powder
10. 10.🌼 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
11. 11.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
12. 12.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
13. 13.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a steel spoon (d) a piece of foil
14. 14.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a white flower (d) a few hours of waiting
19. 19.⚖️ 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 kind of flower (b) the room it stands in (c) the amount of water (d) the length of the stem
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a few hours of waiting (d) a white flower
21. 21.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a balloon (d) a white flower
23. 23.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a paper towel lets water climb up it. (a) False (b) True
26. 26.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a mirror (d) a magnet
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.True or false: a piece of chalk does not let water climb. (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: the kind of flower is what we measure. (a) False (b) True
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) turmeric powder
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a flower stem
38. 38.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
40. 40.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on

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