Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 455 · 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) turmeric powder (b) a mirror (c) a glass of water (d) a battery cell
2. 2.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
4. 4.⚖️ 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 kept the same. (a) True (b) False
5. 5.⚖️ 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 change it (b) we measure it (c) we keep it the same
6. 6.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
7. 7.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
8. 8.🔮 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
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
10. 10.⚖️ 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
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a steel spoon (d) a strip of cloth
13. 13.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a flower stem
14. 14.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a white flower (d) food colour
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a battery cell
18. 18.True or false: a piece of foil does not let water climb. (a) False (b) True
19. 19.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
23. 23.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
24. 24.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (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? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ 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 amount of water
28. 28.True or false: a paper towel lets water climb up it. (a) True (b) False
29. 29.True or false: a piece of chalk does not let water climb. (a) False (b) True
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a magnet (d) a mirror
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a few hours of waiting
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
34. 34.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) petals lose water to air (d) the stem is hot
35. 35.⚖️ 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 change it (c) we measure it
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
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 what we measure. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a rubber eraser
39. 39.True or false: a paper towel does not let water climb. (a) False (b) True
40. 40.💧 Which of these does not let water climb? (a) a glass marble (b) a cotton thread (c) a sugar cube (d) a paper towel

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