Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 774 · 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 is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a plastic ruler
2. 2.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
3. 3.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
5. 5.⚖️ 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 length of the stem (c) the amount of colour
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
7. 7.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.⚖️ 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 room it stands in (c) the length of the stem
10. 10.True or false: a piece of chalk does not let water climb. (a) False (b) True
11. 11.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
12. 12.⚖️ 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 amount of water (b) the room it stands in (c) time for colour to show (d) the amount of colour
13. 13.🧺 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 battery cell
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a glass of water
21. 21.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a flower stem (d) a rubber eraser
25. 25.⚖️ 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 kept the same. (a) True (b) False
26. 26.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
29. 29.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
30. 30.True or false: a flower stem does not let water climb. (a) False (b) True
31. 31.True or false: a sugar cube does not let water climb. (a) False (b) True
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a steel spoon (d) a glass marble
33. 33.⚖️ 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) the kind of flower (c) time for colour to show
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
35. 35.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a strip of cloth (d) a sugar cube
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) food colour
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a sugar cube (d) a glass marble
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a glass marble (d) a piece of chalk
39. 39.⚖️ 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
40. 40.True or false: a glass marble does not let water climb. (a) False (b) True

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