Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 682 · 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 white flower (b) food colour (c) a glass of water (d) a magnet
2. 2.⚖️ 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
3. 3.True or false: a strip of cloth does not let water climb. (a) True (b) False
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) turmeric powder (d) a glass of water
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
9. 9.🧺 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
10. 10.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a battery cell
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
13. 13.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
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 kind of flower (c) time for colour to show (d) the length of the stem
16. 16.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) a white flower
18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
19. 19.⚖️ 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
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: a steel spoon does not let water climb. (a) False (b) True
22. 22.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) yeast
24. 24.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a sugar cube (d) a paper towel
25. 25.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a piece of chalk
26. 26.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
27. 27.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a flower stem (d) a strip of cloth
28. 28.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
29. 29.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a plastic ruler (d) a steel spoon
30. 30.⚖️ 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 kind of flower (d) the room it stands in
31. 31.True or false: a glass marble lets water climb up it. (a) True (b) False
32. 32.⚖️ 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
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.True or false: a strip of cloth lets water climb up it. (a) False (b) True
35. 35.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a sugar cube (d) a piece of foil
37. 37.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
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 keep it the same (b) we change it (c) we measure it
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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