Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 259 · 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.True or false: a rubber eraser does not let water climb. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a rubber eraser (d) a piece of foil
3. 3.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a glass marble (d) a sugar cube
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a plastic ruler
5. 5.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.🌼 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
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a balloon (d) a mirror
15. 15.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a cotton thread (d) a sugar cube
16. 16.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a paper towel does not let water climb. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a paper towel (b) a rubber eraser (c) a cotton thread (d) a sugar cube
19. 19.🔮 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 stay white (c) they turn two colours (d) they fall off at once
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
21. 21.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a balloon
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a few hours of waiting (d) food colour
24. 24.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a piece of foil (d) a plastic ruler
25. 25.⚖️ 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 kind of flower (b) the length of the stem (c) the room it stands in (d) time for colour to show
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a battery cell (d) food colour
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) True (b) False
28. 28.True or false: a cotton thread lets water climb up it. (a) False (b) True
29. 29.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) food colour (d) a glass of water
32. 32.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a plastic ruler does not let water climb. (a) True (b) False
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a white flower (d) a few hours of waiting
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a plastic ruler (d) a piece of foil
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a few hours of waiting
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a steel spoon (d) a cotton thread

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