Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 619 · 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.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) turmeric powder (d) a battery cell
2. 2.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
4. 4.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a few hours of waiting (d) a white flower
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a glass of water (d) food colour
10. 10.⚖️ 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 amount of water (c) the length of the stem
11. 11.⚖️ 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 kind of flower (c) the amount of colour (d) the room it stands in
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a strip of cloth
14. 14.True or false: a sugar cube does not let water climb. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a flower stem (d) a sugar cube
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) yeast (c) a glass of water (d) food colour
18. 18.🔮 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
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
21. 21.True or false: a plastic ruler does not let water climb. (a) False (b) True
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a sugar cube (d) a rubber eraser
25. 25.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a paper towel (d) a sugar cube
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
27. 27.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
28. 28.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a sugar cube (d) a paper towel
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a few hours of waiting
31. 31.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🔮 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
35. 35.True or false: a paper towel lets water climb up it. (a) False (b) True
36. 36.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a piece of chalk (d) a glass marble
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a battery cell
38. 38.🔍 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
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a steel spoon

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