Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 683 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a glass marble (d) a cotton thread
7. 7.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
10. 10.⚖️ 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
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.⚖️ 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
13. 13.💧 Which of these lets water climb up it? (a) a glass marble (b) a strip of cloth (c) a rubber eraser (d) a plastic ruler
14. 14.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a magnet (d) a glass of water
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
17. 17.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.💧 Which of these lets water climb up it? (a) a cotton thread (b) a plastic ruler (c) a glass marble (d) a piece of foil
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) food colour (d) a glass of water
20. 20.True or false: a paper towel does not let water climb. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a sugar cube (d) a glass marble
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
25. 25.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
26. 26.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a glass of water (d) a white flower
28. 28.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
29. 29.⚖️ 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 room it stands in
30. 30.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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) True (b) False
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a white flower (d) a few hours of waiting
33. 33.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) yeast (d) a white flower
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) a white flower
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) food colour (d) a balloon
40. 40.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in (d) the kind of flower

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