Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 384 · 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 battery cell is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
3. 3.True or false: a plastic ruler lets water climb up it. (a) True (b) False
4. 4.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
5. 5.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a piece of chalk (d) a glass marble
7. 7.💧 Which of these lets water climb up it? (a) a sugar cube (b) a glass marble (c) a plastic ruler (d) a piece of foil
8. 8.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a paper towel (d) a flower stem
10. 10.🔮 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
11. 11.⚖️ 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) False (b) True
12. 12.True or false: a sugar cube 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 glass of water (c) a balloon (d) food colour
14. 14.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) food colour (d) a few hours of waiting
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a white flower (d) a glass of water
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
19. 19.True or false: a plastic ruler does not let water climb. (a) False (b) True
20. 20.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a piece of chalk
21. 21.⚖️ 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
22. 22.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: a rubber eraser does not let water climb. (a) False (b) True
24. 24.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
25. 25.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) a white flower
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) a balloon (d) a magnet
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
29. 29.True or false: a flower stem does not let water climb. (a) False (b) True
30. 30.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
31. 31.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a piece of foil (d) a cotton thread
33. 33.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a flower stem (d) a rubber eraser
34. 34.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
36. 36.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they fall off at once (d) they all turn green
37. 37.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a sugar cube (d) a rubber eraser
38. 38.⚖️ 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 amount of water
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes

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