Capillary Action Flower Experiment Worksheet

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

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