Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 655 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
2. 2.True or false: a cotton thread does not let water climb. (a) True (b) False
3. 3.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
5. 5.⚖️ 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 change it (c) we measure it
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a plastic ruler (c) a glass marble (d) a steel spoon
8. 8.🧺 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) a balloon
9. 9.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
10. 10.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
12. 12.⚖️ 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) True (b) False
13. 13.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a strip of cloth (d) a plastic ruler
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) the kind of flower (b) the amount of water (c) the room it stands in (d) time for colour to show
15. 15.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
16. 16.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show (d) the amount of water
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a balloon (d) a magnet
20. 20.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
21. 21.⚖️ 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) True (b) False
22. 22.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a white flower
25. 25.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
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 room it stands in (c) the length of the stem
27. 27.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
28. 28.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🔮 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
30. 30.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) yeast (d) a balloon
34. 34.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a mirror (d) food colour
36. 36.⚖️ 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) the length of the stem (c) time for colour to show
37. 37.True or false: a strip of cloth lets water climb up it. (a) True (b) False
38. 38.⚖️ 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 the one thing we change. (a) True (b) False
39. 39.⚖️ 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
40. 40.⚖️ 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 the one thing we change. (a) True (b) False

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