Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 461 · 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.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a balloon (d) a magnet
3. 3.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🧺 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 magnet (d) a white flower
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
6. 6.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a glass marble (d) a cotton thread
7. 7.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
8. 8.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) yeast (d) a glass of water
10. 10.True or false: a cotton thread does not let water climb. (a) False (b) True
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a balloon (d) a white flower
12. 12.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a glass marble
13. 13.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
15. 15.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a glass marble (d) a sugar cube
17. 17.⚖️ 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
18. 18.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a piece of chalk (d) a strip of cloth
19. 19.🔍 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 petals turn bluish (d) the flower floats away
20. 20.🔮 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
21. 21.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
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.⚖️ 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) time for colour to show (c) the amount of colour (d) the kind of flower
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
25. 25.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
26. 26.⚖️ 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) False (b) True
27. 27.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a paper towel
28. 28.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) yeast
30. 30.True or false: a steel spoon does not let water climb. (a) True (b) False
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.⚖️ 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 room it stands in (b) time for colour to show (c) the amount of water (d) the kind of flower
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) False (b) True
35. 35.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a steel spoon (d) a sugar cube
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) a balloon
39. 39.⚖️ 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
40. 40.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False

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