Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 997 · 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.⚖️ 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 measure it (b) we change it (c) we keep it the same
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
4. 4.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
6. 6.⚖️ 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
7. 7.True or false: a strip of cloth lets water climb up it. (a) True (b) False
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a battery cell (d) yeast
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a sugar cube
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a piece of chalk (d) a steel spoon
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
12. 12.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
13. 13.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
14. 14.⚖️ 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 colour (c) the room it stands in (d) the kind of flower
15. 15.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.⚖️ 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
18. 18.⚖️ 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) False (b) True
19. 19.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) a magnet
21. 21.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
22. 22.True or false: a steel spoon does not let water climb. (a) False (b) True
23. 23.🧺 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) yeast (d) food colour
24. 24.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) turmeric powder (d) a balloon
27. 27.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
28. 28.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) turmeric powder
30. 30.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
32. 32.⚖️ 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 colour
33. 33.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a glass marble (d) a flower stem
34. 34.True or false: a plastic ruler does not let water climb. (a) False (b) True
35. 35.True or false: a piece of chalk lets water climb up it. (a) True (b) False
36. 36.True or false: a piece of foil lets water climb up it. (a) False (b) True
37. 37.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a flower stem (d) a glass marble
39. 39.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a balloon (d) a mirror

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