Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 481 · 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.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
2. 2.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a paper towel (d) a steel spoon
3. 3.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
6. 6.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a paper towel (d) a glass marble
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a paper towel
9. 9.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) turmeric powder
12. 12.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
13. 13.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
17. 17.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in
18. 18.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a cotton thread (d) a piece of chalk
21. 21.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a sugar cube
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
23. 23.⚖️ 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
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.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a magnet (d) a glass of water
26. 26.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) yeast (d) a few hours of waiting
29. 29.⚖️ 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 room it stands in (b) the amount of water (c) the amount of colour (d) the length of the stem
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
31. 31.⚖️ 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 colour (c) the length of the stem
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) a few hours of waiting
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a sugar cube (d) a steel spoon
34. 34.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a strip of cloth (d) a rubber eraser
35. 35.🔮 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
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a cotton thread
37. 37.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show
38. 38.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
39. 39.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water

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