Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 756 · 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? True or false: time for colour to show is what we measure. (a) False (b) True
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
4. 4.🧺 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 white flower (d) food colour
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a strip of cloth (d) a glass marble
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a magnet (d) a mirror
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
10. 10.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a sugar cube (d) a piece of foil
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
14. 14.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a cotton thread (d) a piece of foil
15. 15.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a strip of cloth (d) a piece of chalk
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a few hours of waiting (d) a mirror
17. 17.True or false: a plastic ruler lets water climb up it. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a strip of cloth (d) a sugar cube
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
20. 20.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
21. 21.🧺 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 balloon (d) a few hours of waiting
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
26. 26.🔮 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
27. 27.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
28. 28.💧 Which of these lets water climb up it? (a) a flower stem (b) a rubber eraser (c) a glass marble (d) a plastic ruler
29. 29.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
30. 30.⚖️ 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) True (b) False
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ 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 amount of colour (d) the kind of flower
33. 33.🔍 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
34. 34.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a plastic ruler (d) a rubber eraser
35. 35.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a glass of water
37. 37.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
39. 39.True or false: a strip of cloth does not let water climb. (a) False (b) True
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True

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