Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 494 · 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) yeast (b) a glass of water (c) a magnet (d) a battery cell
2. 2.⚖️ 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) the amount of colour (c) time for colour to show (d) the amount of water
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) yeast
4. 4.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a plastic ruler (d) a steel spoon
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
7. 7.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.💧 Which of these lets water climb up it? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a rubber eraser
10. 10.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
11. 11.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a sugar cube (d) a flower stem
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
13. 13.True or false: a plastic ruler does not let water climb. (a) True (b) False
14. 14.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a sugar cube (d) a flower stem
18. 18.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Which of these does not let water climb? (a) a rubber eraser (b) a flower stem (c) a piece of chalk (d) a strip of cloth
22. 22.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a cotton thread (d) a sugar cube
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
29. 29.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
31. 31.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.⚖️ 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
33. 33.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
34. 34.🛟 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
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a strip of cloth (d) a steel spoon
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a battery cell (d) a magnet
37. 37.⚖️ 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) time for colour to show (c) the length of the stem (d) the room it stands in
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 magnet
39. 39.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False

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