Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 728 · 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.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a paper towel
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a few hours of waiting
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
4. 4.True or false: a cotton thread does not let water climb. (a) True (b) False
5. 5.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
6. 6.⚖️ 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
7. 7.⚖️ 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 colour
8. 8.True or false: a sugar cube does not let water climb. (a) True (b) False
9. 9.True or false: a flower stem lets water climb up it. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a piece of chalk (d) a plastic ruler
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
12. 12.🔮 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
13. 13.🛟 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
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) a white flower
15. 15.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a strip of cloth
16. 16.True or false: a paper towel lets water climb up it. (a) False (b) True
17. 17.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a flower stem (d) a piece of foil
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
19. 19.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) food colour (d) a white flower
21. 21.⚖️ 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 kind of flower (c) the room it stands in (d) the amount of colour
22. 22.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🔍 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 petals turn bluish (d) the water turns green
24. 24.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a piece of foil (d) a plastic ruler
25. 25.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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
27. 27.🔮 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
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
30. 30.⚖️ 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 water (b) the kind of flower (c) the length of the stem (d) time for colour to show
31. 31.True or false: a cotton thread lets water climb up it. (a) False (b) True
32. 32.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a balloon (d) a glass of water
34. 34.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.⚖️ 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
37. 37.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
38. 38.True or false: a piece of foil lets water climb up it. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False

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