Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 92 · 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? Which of these is the one thing we change? (a) the amount of water (b) the length of the stem (c) the room it stands in (d) the kind of flower
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) food colour (d) a mirror
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
4. 4.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a piece of foil (d) a strip of cloth
5. 5.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) turmeric powder (d) a battery cell
10. 10.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
12. 12.True or false: a piece of chalk lets water climb up it. (a) False (b) True
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) food colour (d) a glass of water
14. 14.True or false: a paper towel does not let water climb. (a) False (b) True
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
17. 17.⚖️ 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 what we measure. (a) False (b) True
18. 18.True or false: a cotton thread lets water climb up it. (a) False (b) True
19. 19.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
23. 23.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
25. 25.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a steel spoon (d) a paper towel
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: a sugar cube does not let water climb. (a) True (b) False
28. 28.⚖️ 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 length of the stem (b) the room it stands in (c) time for colour to show (d) the amount of water
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) a battery cell
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a glass of water (d) a few hours of waiting
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a glass marble (d) a paper towel
33. 33.True or false: a rubber eraser does not let water climb. (a) True (b) False
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a magnet (d) a glass of water
36. 36.💧 Which of these lets water climb up it? (a) a glass marble (b) a sugar cube (c) a steel spoon (d) a piece of foil
37. 37.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a magnet (d) turmeric powder
40. 40.⚖️ 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 length of the stem (c) the kind of flower

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