Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 196 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) a glass of water
2. 2.True or false: a flower stem does not let water climb. (a) True (b) False
3. 3.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
5. 5.🔍 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
6. 6.⚖️ 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 kept the same. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a flower stem (d) a paper towel
8. 8.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a flower stem (d) a sugar cube
10. 10.True or false: a flower stem lets water climb up it. (a) False (b) True
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 room it stands in (c) time for colour to show
12. 12.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a piece of chalk lets water climb up it. (a) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) yeast (d) a battery cell
15. 15.True or false: a white flower is not needed for the coloured flower experiment. (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 amount of colour (b) time for colour to show (c) the amount of water (d) the length of the stem
17. 17.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
18. 18.True or false: a strip of cloth lets water climb up it. (a) False (b) True
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) turmeric powder
20. 20.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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 change it (c) we keep it the same
22. 22.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of colour
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
24. 24.True or false: a strip of cloth does not let water climb. (a) False (b) True
25. 25.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
26. 26.True or false: a steel spoon does not let water climb. (a) False (b) True
27. 27.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
28. 28.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
30. 30.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
31. 31.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) turmeric powder
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.True or false: a paper towel lets water climb up it. (a) True (b) False
35. 35.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 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) a balloon
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a few hours of waiting (d) a magnet
40. 40.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True

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