Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 791 · 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.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a balloon (d) a few hours of waiting
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a few hours of waiting
7. 7.⚖️ 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 change it (c) we measure it
8. 8.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a piece of chalk (d) a paper towel
9. 9.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
15. 15.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
16. 16.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a rubber eraser (d) a piece of chalk
17. 17.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a rubber eraser (d) a glass marble
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a plastic ruler (d) a flower stem
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) food colour
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 turn two colours (c) they fall off at once (d) they stay white
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.⚖️ 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
27. 27.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the amount of water
31. 31.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
32. 32.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a steel spoon (d) a glass marble
33. 33.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a plastic ruler (d) a steel spoon
34. 34.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a sugar cube (d) a glass marble
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a piece of foil
36. 36.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
37. 37.⚖️ 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 amount of water (c) the kind of flower (d) the room it stands in
38. 38.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) yeast (d) a white flower
40. 40.⚖️ 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 keep it the same (c) we change it

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