Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 503 · 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 few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🔍 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
3. 3.⚖️ 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 length of the stem (c) the kind of flower (d) time for colour to show
4. 4.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
6. 6.True or false: a plastic ruler lets water climb up it. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a flower stem (d) a piece of foil
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) food colour (c) yeast (d) a magnet
9. 9.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: a sugar cube lets water climb up it. (a) False (b) True
11. 11.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: a strip of cloth lets water climb up it. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚖️ 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 water (d) the room it stands in
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
18. 18.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a mirror (d) a white flower
20. 20.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of chalk (d) a rubber eraser
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a cotton thread (d) a plastic ruler
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) yeast (d) a white flower
23. 23.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a paper towel (d) a glass marble
26. 26.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
27. 27.🔮 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 turn two colours (c) they fall off at once (d) they stay white
28. 28.True or false: a piece of foil lets water climb up it. (a) True (b) False
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a glass of water (d) food colour
30. 30.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚖️ 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) time for colour to show (c) the length of the stem
33. 33.🔮 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
34. 34.⚖️ 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 what we measure. (a) False (b) True
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
36. 36.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a piece of chalk
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 balloon
38. 38.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a steel spoon
39. 39.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a cotton thread (d) a strip of cloth
40. 40.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers

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