Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 269 · 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: the kind of flower is the one thing we change. (a) False (b) True
2. 2.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a mirror (d) turmeric powder
5. 5.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a piece of foil
6. 6.⚖️ 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 kind of flower (b) the room it stands in (c) the amount of colour (d) time for colour to show
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
8. 8.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a rubber eraser
9. 9.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.⚖️ 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) time for colour to show (c) the length of the stem (d) the kind of flower
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a glass of water (d) a balloon
14. 14.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
15. 15.True or false: a sugar cube lets water climb up it. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a balloon (d) a magnet
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🧺 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) a battery cell
20. 20.⚖️ 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
21. 21.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
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 water”? (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.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
26. 26.True or false: a paper towel does not let water climb. (a) True (b) False
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
28. 28.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a flower stem (d) a steel spoon
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a cotton thread (d) a strip of cloth
30. 30.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a rubber eraser
32. 32.⚖️ 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) True (b) False
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) turmeric powder (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) a magnet (c) a white flower (d) food colour
35. 35.True or false: a piece of chalk lets water climb up it. (a) False (b) True
36. 36.⚖️ 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
37. 37.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
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 colour”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a cotton thread (d) a sugar cube

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