Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 667 · 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? What do we do with “the amount of colour”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a battery cell (d) food colour
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
5. 5.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a flower stem
6. 6.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a rubber eraser (d) a piece of chalk
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
8. 8.⚖️ 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) False (b) True
9. 9.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a piece of chalk (d) a sugar cube
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a piece of chalk (d) a steel spoon
11. 11.💧 Which of these does not let water climb? (a) a sugar cube (b) a steel spoon (c) a piece of chalk (d) a flower stem
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a few hours of waiting
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a glass marble (d) a piece of foil
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a few hours of waiting (d) yeast
16. 16.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
18. 18.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🌼 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
21. 21.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.⚖️ 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 what we measure. (a) False (b) True
24. 24.⚖️ 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 amount of colour (b) the length of the stem (c) the amount of water (d) the kind of flower
25. 25.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the amount of colour (d) the kind of flower
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
29. 29.🔮 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 fall off at once (c) they all turn green (d) they stay white
30. 30.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a few hours of waiting
32. 32.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 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) a magnet (d) a few hours of waiting
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) food colour (d) a white flower
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) food colour (d) a white flower
37. 37.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a piece of foil (d) a rubber eraser
38. 38.True or false: a paper towel does not let water climb. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a sugar cube
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed

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