Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 93 · 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 needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
3. 3.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a white flower (d) food colour
6. 6.True or false: a rubber eraser lets water climb up it. (a) True (b) False
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a paper towel
8. 8.⚖️ 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 measure it (b) we keep it the same (c) we change it
9. 9.True or false: a sugar cube lets water climb up it. (a) True (b) False
10. 10.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a sugar cube (d) a glass marble
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a few hours of waiting (d) a glass of water
12. 12.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a piece of chalk
13. 13.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the stem turns blue (d) the flower glows
14. 14.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a rubber eraser
16. 16.⚖️ 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) time for colour to show (b) the kind of flower (c) the room it stands in (d) the length of the stem
17. 17.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a balloon (d) a magnet
19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a piece of foil
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a mirror (d) turmeric powder
21. 21.💧 Which of these lets water climb up it? (a) a piece of foil (b) a piece of chalk (c) a plastic ruler (d) a steel spoon
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
23. 23.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a cotton thread
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a glass of water
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
26. 26.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) yeast
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a mirror (d) a magnet
29. 29.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a rubber eraser
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) food colour
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a magnet
33. 33.⚖️ 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
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.⚖️ 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
36. 36.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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) False (b) True
38. 38.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a paper towel (d) a strip of cloth
39. 39.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
40. 40.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a sugar cube (d) a flower stem

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