Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 824 · 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.🔮 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 turn two colours (d) they fall off at once
2. 2.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a piece of foil
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a cotton thread
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) turmeric powder (d) yeast
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a piece of chalk
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a balloon (d) a battery cell
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
12. 12.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
13. 13.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a plastic ruler (d) a glass marble
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
15. 15.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
16. 16.🔮 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
17. 17.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a magnet
20. 20.⚖️ 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) the amount of colour (d) time for colour to show
21. 21.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a cotton thread
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a sugar cube
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) food colour (d) a glass of water
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
30. 30.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a cotton thread (d) a plastic ruler
31. 31.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a flower stem (d) a piece of chalk
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.True or false: a steel spoon lets water climb up it. (a) False (b) True
34. 34.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
35. 35.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a white flower (d) a glass of water
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.🧺 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
39. 39.⚖️ 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
40. 40.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up

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