Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 648 · 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: food colour is not needed for the coloured flower experiment. (a) False (b) True
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
5. 5.True or false: a paper towel does not let water climb. (a) True (b) False
6. 6.True or false: a piece of chalk lets water climb up it. (a) False (b) True
7. 7.⚖️ 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 amount of colour (b) the length of the stem (c) the amount of water (d) time for colour to show
8. 8.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a steel spoon (d) a sugar cube
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a white flower (d) yeast
13. 13.⚖️ 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) False (b) True
14. 14.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
15. 15.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
17. 17.🔮 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
18. 18.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
19. 19.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
20. 20.True or false: a few hours of waiting is not 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 room it stands in”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
23. 23.True or false: a paper towel lets water climb up it. (a) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) a few hours of waiting
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
26. 26.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.💧 Which of these lets water climb up it? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a rubber eraser
28. 28.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) turmeric powder
31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a steel spoon
34. 34.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 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 battery cell (d) a few hours of waiting
36. 36.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed

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