Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 505 · 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.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the length of the stem (d) the room it stands in
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a mirror (d) a few hours of waiting
7. 7.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a rubber eraser (d) a plastic ruler
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) food colour (d) a mirror
10. 10.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
11. 11.⚖️ 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) the kind of flower (c) time for colour to show
12. 12.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
13. 13.True or false: a strip of cloth does not let water climb. (a) False (b) True
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
15. 15.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a strip of cloth (d) a piece of chalk
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a glass of water (d) a white flower
17. 17.True or false: a cotton thread does not let water climb. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a strip of cloth (d) a rubber eraser
19. 19.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
20. 20.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a piece of chalk (d) a flower stem
21. 21.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
22. 22.🔮 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
23. 23.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a flower stem (d) a plastic ruler
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a magnet (d) a white flower
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) a magnet
27. 27.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a glass marble (d) a piece of foil
28. 28.⚖️ 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 room it stands in (c) the length of the stem
29. 29.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a strip of cloth (d) a piece of foil
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
32. 32.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a paper towel (d) a strip of cloth
33. 33.⚖️ 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 length of the stem (b) the amount of water (c) the room it stands in (d) time for colour to show
34. 34.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a glass marble (d) a piece of foil
35. 35.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a glass of water (d) food colour
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a magnet (d) a glass of water
38. 38.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
39. 39.True or false: a paper towel does not let water climb. (a) True (b) False
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a balloon (d) turmeric powder

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