Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 843 · 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: a piece of foil lets water climb up it. (a) False (b) True
2. 2.🌼 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
3. 3.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
4. 4.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a white flower (c) food colour (d) a few hours of waiting
8. 8.⚖️ 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
9. 9.True or false: a rubber eraser does not let water climb. (a) True (b) False
10. 10.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
11. 11.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a steel spoon (d) a sugar cube
12. 12.🧺 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) food colour (d) yeast
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.True or false: a rubber eraser lets water climb up it. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a piece of chalk
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a balloon (d) a few hours of waiting
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) False (b) True
18. 18.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a strip of cloth
19. 19.🔮 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 fall off at once (c) they turn two colours (d) they stay white
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a glass marble (d) a rubber eraser
22. 22.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a plastic ruler
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
26. 26.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a rubber eraser (d) a strip of cloth
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) nothing ever happens (d) it turns to plastic
28. 28.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a strip of cloth (d) a piece of foil
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a magnet (d) a glass of water
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 amount of water (c) the kind of flower (d) the room it stands in
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a few hours of waiting (d) a white flower
32. 32.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
36. 36.True or false: a cotton thread does not let water climb. (a) False (b) True
37. 37.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a glass of water (d) food colour
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a sugar cube

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