Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 402 · 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.⚖️ 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 what we measure. (a) True (b) False
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
3. 3.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
5. 5.True or false: a piece of foil lets water climb up it. (a) False (b) True
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
7. 7.True or false: a strip of cloth lets water climb up it. (a) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a few hours of waiting (d) a white flower
9. 9.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a plastic ruler
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a glass of water (d) food colour
11. 11.💧 Which of these does not let water climb? (a) a steel spoon (b) a piece of chalk (c) a flower stem (d) a cotton thread
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a mirror (d) a balloon
13. 13.True or false: a sugar cube 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? True or false: the amount of colour is the one thing we change. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a cotton thread
16. 16.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
17. 17.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a mirror
22. 22.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a paper towel (d) a flower stem
23. 23.🔮 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 fall off at once (d) they turn two colours
24. 24.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
25. 25.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
26. 26.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a piece of chalk (d) a steel spoon
28. 28.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
29. 29.💧 Dip a strip of cloth 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 mirror for the coloured flower experiment? (a) needed (b) not needed
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ 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 amount of colour (b) the length of the stem (c) the kind of flower (d) the amount of water
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a flower stem
36. 36.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a steel spoon (d) a rubber eraser
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a mirror (d) a white flower
38. 38.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) yeast (d) a few hours of waiting
40. 40.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True

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