Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 181 · 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 yeast for the coloured flower experiment? (a) needed (b) not needed
2. 2.🛟 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
3. 3.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a flower stem
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a balloon
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
9. 9.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
10. 10.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of colour (d) the room it stands in
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a strip of cloth
13. 13.🔮 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 turn two colours (c) they fall off at once (d) they stay white
14. 14.⚖️ 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) time for colour to show (b) the amount of colour (c) the amount of water (d) the length of the stem
15. 15.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: a piece of chalk lets water climb up it. (a) False (b) True
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) yeast
18. 18.True or false: a piece of foil does not let water climb. (a) False (b) True
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
21. 21.🌼 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
22. 22.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a steel spoon (d) a cotton thread
23. 23.True or false: a sugar cube does not let water climb. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a rubber eraser (d) a piece of chalk
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a piece of foil (d) a cotton thread
27. 27.⚖️ 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 colour (b) time for colour to show (c) the length of the stem
28. 28.⚖️ 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) False (b) True
29. 29.⚖️ 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) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a steel spoon
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a piece of foil (d) a glass marble
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
33. 33.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a battery cell
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a strip of cloth
39. 39.⚖️ 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) True (b) False
40. 40.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red

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