Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 649 · 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.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
2. 2.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a magnet (d) a balloon
4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a piece of foil (d) a steel spoon
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
9. 9.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
10. 10.💧 Dip a piece of chalk 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 amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
13. 13.⚖️ 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 water (b) the length of the stem (c) the room it stands in (d) the amount of colour
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a magnet (d) a balloon
17. 17.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
18. 18.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
19. 19.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
20. 20.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a few hours of waiting
22. 22.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) yeast
25. 25.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
26. 26.True or false: a piece of foil lets water climb up it. (a) False (b) True
27. 27.True or false: a rubber eraser lets water climb up it. (a) False (b) True
28. 28.True or false: a plastic ruler lets water climb up it. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a plastic ruler
30. 30.True or false: a flower stem does not let water climb. (a) True (b) False
31. 31.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.True or false: a sugar cube does not let water climb. (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) False (b) True
35. 35.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a plastic ruler
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a plastic ruler (d) a glass marble
40. 40.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False

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