Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 865 · 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) yeast (b) a balloon (c) food colour (d) a battery cell
2. 2.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a plastic ruler (d) a sugar cube
3. 3.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a plastic ruler
4. 4.⚖️ 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
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a piece of chalk (d) a sugar cube
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a mirror
8. 8.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
9. 9.True or false: a glass marble lets water climb up it. (a) True (b) False
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a white flower (d) a glass of water
11. 11.🔮 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 fall off at once (d) they turn two colours
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a magnet (d) a few hours of waiting
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a piece of chalk
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a glass of water (d) a white flower
16. 16.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
17. 17.True or false: a cotton thread does not let water climb. (a) False (b) True
18. 18.⚖️ 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
19. 19.🧺 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) food colour (d) a balloon
20. 20.⚖️ 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) True (b) False
21. 21.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a rubber eraser
22. 22.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
23. 23.⚖️ 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 amount of colour (b) the kind of flower (c) the length of the stem (d) the room it stands in
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a paper towel
25. 25.🛟 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
26. 26.True or false: a plastic ruler lets water climb up it. (a) True (b) False
27. 27.🔍 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
28. 28.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) yeast (d) a magnet
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a cotton thread
31. 31.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a flower stem
32. 32.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a battery cell
34. 34.⚖️ 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
35. 35.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
37. 37.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) turmeric powder (d) a mirror
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
40. 40.⚖️ 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

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