Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 333 · 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.🔍 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 water turns green (d) the flower floats away
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 colour”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a battery cell (d) a balloon
5. 5.💧 Which of these does not let water climb? (a) a rubber eraser (b) a strip of cloth (c) a sugar cube (d) a flower stem
6. 6.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a flower stem
7. 7.🔮 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 stay white (c) they fall off at once (d) they turn two colours
8. 8.True or false: a flower stem does not let water climb. (a) True (b) False
9. 9.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
10. 10.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
11. 11.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
12. 12.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
13. 13.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a magnet
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
19. 19.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the room it stands in
20. 20.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 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
22. 22.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a cotton thread
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
24. 24.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
25. 25.⚖️ 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 length of the stem (c) the room it stands in (d) time for colour to show
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a balloon (d) a glass of water
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a rubber eraser (d) a sugar cube
29. 29.🧺 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 white flower (d) a magnet
30. 30.⚖️ 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 change it (c) we keep it the same
31. 31.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of foil (d) a flower stem
32. 32.True or false: a piece of chalk does not let water climb. (a) False (b) True
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a piece of chalk lets water climb up it. (a) True (b) False
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a sugar cube (d) a piece of foil
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a piece of chalk (d) a glass marble
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
40. 40.🧺 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

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