Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 174 · 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) yeast (b) food colour (c) a white flower (d) a few hours of waiting
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 measure it (b) we change it (c) we keep it the same
3. 3.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🛟 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
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a glass marble
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.⚖️ 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) the amount of water (c) time for colour to show (d) the kind of flower
13. 13.⚖️ 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 the one thing we change. (a) True (b) False
14. 14.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a glass marble
15. 15.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a piece of chalk (d) a steel spoon
17. 17.⚖️ 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 the one thing we change. (a) False (b) True
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) turmeric powder (d) a balloon
19. 19.True or false: a paper towel does not let water climb. (a) False (b) True
20. 20.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a mirror
22. 22.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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) True (b) False
24. 24.🔍 Which is the odd one out? (a) a flower stem (b) a paper towel (c) a plastic ruler (d) a strip of cloth
25. 25.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a paper towel lets water climb up it. (a) True (b) False
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a cotton thread
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
31. 31.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a piece of foil (d) a plastic ruler
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.⚖️ 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 room it stands in
34. 34.⚖️ 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 room it stands in (c) the length of the stem (d) the kind of flower
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a rubber eraser (d) a steel spoon
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a glass marble (d) a plastic ruler
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a balloon

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