Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 807 · 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.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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
3. 3.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
5. 5.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a glass of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
8. 8.⚖️ 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 what we measure. (a) True (b) False
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
10. 10.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
12. 12.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a cotton thread (d) a piece of chalk
14. 14.⚖️ 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
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) food colour (d) a glass of water
17. 17.⚖️ 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 measure it (c) we keep it the same
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: a steel spoon lets water climb up it. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) turmeric powder (d) a mirror
21. 21.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a rubber eraser (d) a paper towel
24. 24.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
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 change it (b) we keep it the same (c) we measure it
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
28. 28.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a cotton thread (d) a rubber eraser
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a balloon (d) a few hours of waiting
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a strip of cloth (d) a paper towel
31. 31.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a steel spoon (d) a piece of foil
32. 32.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
33. 33.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a battery cell (d) a white flower
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a paper towel
37. 37.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed

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