Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 14 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) yeast (d) a few hours of waiting
2. 2.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a sugar cube (d) a cotton thread
3. 3.True or false: a steel spoon lets water climb up it. (a) True (b) False
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
5. 5.⚖️ 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 change it (c) we measure it
6. 6.True or false: a rubber eraser does not let water climb. (a) False (b) True
7. 7.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a flower stem (d) a steel spoon
8. 8.🔮 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 fall off at once (c) they turn two colours (d) they stay white
9. 9.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a mirror (d) a glass of water
12. 12.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a plastic ruler
13. 13.⚖️ 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 kind of flower (c) the length of the stem (d) the room it stands in
14. 14.🔍 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
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
16. 16.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of chalk (d) a plastic ruler
17. 17.⚖️ 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) the amount of colour (c) the kind of flower (d) time for colour to show
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a few hours of waiting
19. 19.⚖️ 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 kept the same. (a) True (b) False
20. 20.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a flower stem
21. 21.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) food colour
23. 23.True or false: a strip of cloth does not let water climb. (a) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) turmeric powder
25. 25.⚖️ 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
26. 26.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a steel spoon (d) a piece of foil
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) yeast (d) a few hours of waiting
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
33. 33.🔮 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
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a balloon
35. 35.True or false: a flower stem lets water climb up it. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a glass marble (d) a rubber eraser
37. 37.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a plastic ruler (d) a glass marble
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a magnet (d) a mirror
39. 39.🌼 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
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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