Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 766 · 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.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
2. 2.🧺 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 balloon
3. 3.⚖️ 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 kind of flower (c) the room it stands in (d) the length of the stem
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a plastic ruler
5. 5.⚖️ 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
6. 6.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a cotton thread (d) a rubber eraser
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a mirror (d) a few hours of waiting
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a magnet (d) food colour
9. 9.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of foil (c) a cotton thread (d) a paper towel
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) food colour (d) a white flower
11. 11.⚖️ 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) True (b) False
12. 12.💧 Which of these does not let water climb? (a) a steel spoon (b) a flower stem (c) a strip of cloth (d) a piece of chalk
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a glass of water (d) a few hours of waiting
14. 14.True or false: a rubber eraser lets water climb up it. (a) True (b) False
15. 15.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
17. 17.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a flower stem (d) a cotton thread
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a glass of water (d) a white flower
21. 21.⚖️ 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
22. 22.True or false: a paper towel does not let water climb. (a) True (b) False
23. 23.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
24. 24.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
25. 25.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) turmeric powder (d) a few hours of waiting
27. 27.True or false: a glass marble lets water climb up it. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a plastic ruler (d) a cotton thread
29. 29.⚖️ 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 room it stands in (b) the length of the stem (c) the kind of flower (d) time for colour to show
30. 30.True or false: a flower stem does not let water climb. (a) True (b) False
31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
32. 32.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
33. 33.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
34. 34.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a rubber eraser
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
36. 36.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
37. 37.⚖️ 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
38. 38.True or false: a piece of chalk does not let water climb. (a) False (b) True
39. 39.True or false: a flower stem lets water climb up it. (a) False (b) True
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed

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