Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 562 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ 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
3. 3.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a glass marble (d) a flower stem
6. 6.⚖️ 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 length of the stem (d) the amount of water
7. 7.⚖️ 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
8. 8.💧 Which of these does not let water climb? (a) a glass marble (b) a paper towel (c) a cotton thread (d) a sugar cube
9. 9.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a glass marble (d) a flower stem
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a glass of water (d) a few hours of waiting
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a mirror
12. 12.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
13. 13.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) a magnet (d) a few hours of waiting
15. 15.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
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 amount of colour (b) the length of the stem (c) the kind of flower (d) time for colour to show
17. 17.True or false: a sugar cube does not let water climb. (a) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
20. 20.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
21. 21.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
22. 22.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a flower stem (d) a cotton thread
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
25. 25.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
26. 26.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a sugar cube (d) a piece of chalk
27. 27.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a steel spoon
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) False (b) True
29. 29.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
30. 30.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a glass of water
34. 34.True or false: a glass marble lets water climb up it. (a) False (b) True
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a battery cell (d) a few hours of waiting
36. 36.🧺 Do we need a battery cell 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) food colour (b) a white flower (c) a glass of water (d) a mirror
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) yeast
39. 39.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a paper towel
40. 40.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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