Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 169 · 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.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 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) food colour (d) yeast
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a piece of chalk (d) a rubber eraser
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) time for colour to show (b) the kind of flower (c) the length of the stem
5. 5.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
6. 6.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) food colour (d) a few hours of waiting
8. 8.🔮 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 fall off at once (c) they stay white (d) they turn two colours
9. 9.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) yeast (d) a few hours of waiting
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a rubber eraser
14. 14.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
15. 15.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) food colour
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) food colour (d) a few hours of waiting
18. 18.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
19. 19.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
23. 23.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
24. 24.True or false: a rubber eraser lets water climb up it. (a) True (b) False
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.⚖️ 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) False (b) True
27. 27.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a sugar cube
28. 28.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🌼 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
30. 30.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a flower stem
31. 31.⚖️ 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 amount of colour (b) the kind of flower (c) time for colour to show (d) the amount of water
32. 32.🔍 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 stem turns to ice (d) the flower floats away
33. 33.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
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 the one thing we change. (a) True (b) False
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) food colour (d) a battery cell
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
38. 38.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a plastic ruler (d) a paper towel
40. 40.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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