Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 706 · 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.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a steel spoon lets water climb up it. (a) False (b) True
3. 3.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🧺 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) yeast (d) a few hours of waiting
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
7. 7.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a rubber eraser (d) a strip of cloth
8. 8.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) True (b) False
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
14. 14.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
16. 16.⚖️ 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 kind of flower (b) the amount of water (c) the room it stands in (d) the length of the stem
17. 17.True or false: a glass marble lets water climb up it. (a) False (b) True
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
22. 22.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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) time for colour to show (c) the kind of flower (d) the room it stands in
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
25. 25.🧺 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
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change it
27. 27.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a sugar cube (d) a rubber eraser
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a piece of chalk (d) a glass marble
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) food colour
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a flower stem
32. 32.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a flower stem lets water climb up it. (a) True (b) False
34. 34.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a steel spoon (d) a rubber eraser
35. 35.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a paper towel does not let water climb. (a) False (b) True
37. 37.🧺 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 glass of water
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a glass marble
39. 39.⚖️ 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
40. 40.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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