Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 980 · 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 is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a mirror (d) yeast
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a mirror (d) turmeric powder
3. 3.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
6. 6.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a strip of cloth does not let water climb. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a paper towel (d) a cotton thread
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a magnet (d) a glass of water
11. 11.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
12. 12.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a paper towel (d) a piece of foil
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) food colour (d) a white flower
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a few hours of waiting
15. 15.🧺 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 battery cell (d) a white flower
16. 16.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) food colour
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
19. 19.⚖️ 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) the room it stands in (c) the length of the stem (d) time for colour to show
20. 20.🔍 Which is the odd one out? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a rubber eraser
21. 21.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
24. 24.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a strip of cloth
25. 25.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the amount of water
26. 26.⚖️ 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) the length of the stem (c) time for colour to show
27. 27.⚖️ 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 measure it (c) we change it
28. 28.True or false: a flower stem does not let water climb. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ 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 change it (c) we keep it the same
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.True or false: a piece of chalk lets water climb up it. (a) True (b) False
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a piece of foil
36. 36.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) turmeric powder (d) a balloon
39. 39.⚖️ 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) True (b) False
40. 40.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows

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