Capillary Action Flower Experiment Worksheet

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

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