Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 209 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
2. 2.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
3. 3.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a flower stem (d) a sugar cube
4. 4.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
5. 5.True or false: a strip of cloth does not let water climb. (a) True (b) False
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) yeast (d) a glass of water
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
9. 9.True or false: a cotton thread lets water climb up it. (a) False (b) True
10. 10.True or false: a paper towel does not let water climb. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a rubber eraser (d) a piece of foil
12. 12.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
13. 13.True or false: a flower stem lets water climb up it. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) food colour (c) a white flower (d) a few hours of waiting
15. 15.True or false: a strip of cloth lets water climb up it. (a) False (b) True
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) the kind of flower (b) time for colour to show (c) the amount of water (d) the length of the stem
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a flower stem (b) a rubber eraser (c) a sugar cube (d) a cotton thread
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) turmeric powder (d) a few hours of waiting
20. 20.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ 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 kind of flower (c) the room it stands in (d) the amount of colour
22. 22.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a steel spoon (d) a paper towel
23. 23.🔮 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 fall off at once (c) they turn two colours (d) they all turn green
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a paper towel (c) a plastic ruler (d) a steel spoon
27. 27.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a paper towel
29. 29.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) a balloon
32. 32.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a steel spoon (d) a cotton thread
33. 33.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
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 keep it the same (b) we change it (c) we measure it
35. 35.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a plastic ruler (d) a glass marble
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
37. 37.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) food colour (d) a magnet
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
40. 40.True or false: a cotton thread does not let water climb. (a) False (b) True

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