Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 521 · 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 is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a strip of cloth (d) a glass marble
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) time for colour to show (b) the kind of flower (c) the length of the stem (d) the room it stands in
3. 3.🧺 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
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
5. 5.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
6. 6.⚖️ 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) True (b) False
7. 7.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a cotton thread (d) a steel spoon
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
9. 9.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a flower stem (d) a paper towel
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
13. 13.True or false: a rubber eraser lets water climb up it. (a) True (b) False
14. 14.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
15. 15.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a steel spoon (d) a sugar cube
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
17. 17.🛟 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
18. 18.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
20. 20.True or false: a plastic ruler does not let water climb. (a) False (b) True
21. 21.True or false: a glass marble lets water climb up it. (a) True (b) False
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
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 the one thing we change. (a) False (b) True
24. 24.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
25. 25.⚖️ 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
26. 26.True or false: a piece of foil lets water climb up it. (a) False (b) True
27. 27.True or false: a cotton thread does not let water climb. (a) True (b) False
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a piece of chalk
31. 31.⚖️ 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 colour
32. 32.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a paper towel (d) a glass marble
33. 33.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a piece of chalk
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.True or false: a strip of cloth does not let water climb. (a) False (b) True
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a plastic ruler (d) a rubber eraser
38. 38.True or false: a flower stem lets water climb up it. (a) False (b) True
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 room it stands in (b) the length of the stem (c) time for colour to show
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed

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