Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 634 · 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.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ 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
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
4. 4.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a strip of cloth
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) True (b) False
6. 6.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
7. 7.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
8. 8.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a glass marble lets water climb up it. (a) False (b) True
10. 10.⚖️ 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) time for colour to show (b) the amount of water (c) the length of the stem (d) the amount of colour
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a rubber eraser (d) a sugar cube
13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
14. 14.True or false: a piece of chalk does not let water climb. (a) True (b) False
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the room it stands in
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a piece of foil
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) turmeric powder
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
22. 22.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a strip of cloth
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) a white flower
25. 25.⚖️ 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
26. 26.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
27. 27.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) petals like colour (d) the stem is hot
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a glass of water (d) yeast
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 the one thing we change. (a) True (b) False
32. 32.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
34. 34.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
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 balloon (c) a glass of water (d) a white flower
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a flower stem (d) a rubber eraser
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a magnet (d) a balloon
38. 38.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a paper towel
39. 39.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a cotton thread
40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a cotton thread (d) a strip of cloth

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