Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 270 · 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 plastic ruler lets water climb up it. (a) True (b) False
2. 2.💧 Which of these does not let water climb? (a) a cotton thread (b) a steel spoon (c) a paper towel (d) a strip of cloth
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a plastic ruler (d) a glass marble
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a glass of water (d) a white flower
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a steel spoon (d) a rubber eraser
9. 9.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a flower stem (d) a piece of chalk
10. 10.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
11. 11.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
12. 12.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
13. 13.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.🔍 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
16. 16.True or false: a paper towel does not let water climb. (a) False (b) True
17. 17.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
18. 18.True or false: a rubber eraser does not let water climb. (a) False (b) True
19. 19.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a paper towel (d) a sugar cube
21. 21.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
22. 22.True or false: a sugar cube does not let water climb. (a) True (b) False
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
24. 24.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) food colour
27. 27.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a magnet (d) a mirror
29. 29.⚖️ 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
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a battery cell (d) a glass of water
31. 31.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the amount of colour
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a few hours of waiting (d) a magnet
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a paper towel (d) a piece of chalk
37. 37.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
39. 39.⚖️ 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
40. 40.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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