Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 213 · 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.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
3. 3.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a steel spoon
4. 4.True or false: a flower stem does not let water climb. (a) False (b) True
5. 5.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of colour (d) the amount of water
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a few hours of waiting (d) food colour
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) food colour
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a few hours of waiting
14. 14.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a cotton thread
15. 15.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔮 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
18. 18.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
19. 19.True or false: a flower stem lets water climb up it. (a) True (b) False
20. 20.⚖️ 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 water (b) the length of the stem (c) time for colour to show
21. 21.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
22. 22.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
24. 24.⚖️ 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
25. 25.⚖️ 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) True (b) False
26. 26.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
27. 27.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a rubber eraser (d) a cotton thread
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 colour”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
32. 32.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a flower stem
33. 33.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a flower stem (d) a steel spoon
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a strip of cloth
36. 36.🔮 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 turn two colours (c) they fall off at once (d) they all turn green
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a sugar cube
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a piece of foil

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