Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 918 · 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.⚖️ 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
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a magnet (d) a balloon
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
10. 10.🔮 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 fall off at once (d) they stay white
11. 11.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
13. 13.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a glass marble (d) a plastic ruler
15. 15.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
16. 16.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
18. 18.⚖️ 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
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.True or false: a cotton thread lets water climb up it. (a) True (b) False
21. 21.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a paper towel (d) a plastic ruler
24. 24.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
25. 25.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a rubber eraser (d) a flower stem
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
27. 27.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of foil (d) a flower stem
28. 28.🔮 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
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 the one thing we change. (a) True (b) False
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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 room it stands in (b) the kind of flower (c) time for colour to show (d) the length of the stem
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a few hours of waiting (d) a white flower
34. 34.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a battery cell (d) turmeric powder
36. 36.True or false: a piece of foil does not let water climb. (a) True (b) False
37. 37.True or false: a piece of chalk does not let water climb. (a) False (b) True
38. 38.🧺 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) a glass of water (d) a mirror
39. 39.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed

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