Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 133 · 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? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: a cotton thread does not let water climb. (a) False (b) True
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a white flower (d) a few hours of waiting
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
6. 6.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
9. 9.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
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 the one thing we change. (a) True (b) False
11. 11.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a paper towel does not let water climb. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
15. 15.⚖️ 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 water (b) the amount of colour (c) the kind of flower (d) the length of the stem
16. 16.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
18. 18.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a strip of cloth (d) a plastic ruler
19. 19.True or false: a sugar cube lets water climb up it. (a) False (b) True
20. 20.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: a piece of foil lets water climb up it. (a) False (b) True
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) food colour
24. 24.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
25. 25.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
29. 29.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a sugar cube (d) a rubber eraser
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the amount of colour (b) time for colour to show (c) the length of the stem
32. 32.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a piece of chalk (d) a piece of foil
33. 33.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
34. 34.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
35. 35.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a cotton thread (d) a rubber eraser
37. 37.⚖️ 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
38. 38.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a strip of cloth (d) a paper towel
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False

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