Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 899 · 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 glass of water (b) yeast (c) food colour (d) a few hours of waiting
2. 2.True or false: a sugar cube does not let water climb. (a) True (b) False
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a battery cell
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
5. 5.True or false: a paper towel does not let water climb. (a) True (b) False
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) turmeric powder (d) a magnet
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
9. 9.⚖️ 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
10. 10.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
11. 11.⚖️ 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 kind of flower (c) the length of the stem
12. 12.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a steel spoon
14. 14.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.True or false: a sugar cube lets water climb up it. (a) True (b) False
16. 16.🧺 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) food colour (d) a battery cell
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
18. 18.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a flower stem (d) a steel spoon
20. 20.⚖️ 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 length of the stem (b) the amount of colour (c) the kind of flower (d) the amount of water
21. 21.🔮 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 turn two colours (c) they stay white (d) they fall off at once
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a battery cell (d) a mirror
23. 23.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
24. 24.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a flower stem (d) a paper towel
25. 25.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a glass marble (d) a plastic ruler
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
28. 28.True or false: a paper towel lets water climb up it. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a steel spoon
30. 30.⚖️ 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
31. 31.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a mirror
33. 33.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the kind of flower
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
38. 38.⚖️ 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
39. 39.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
40. 40.🧺 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

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