Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 541 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a balloon (d) a glass of water
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a glass marble (d) a steel spoon
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) a white flower
5. 5.⚖️ 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) True (b) False
6. 6.⚖️ 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 amount of water (c) time for colour to show (d) the length of the stem
7. 7.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
10. 10.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
11. 11.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
12. 12.⚖️ 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) False (b) True
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a white flower (d) turmeric powder
14. 14.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) food colour (d) a magnet
16. 16.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
17. 17.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
18. 18.True or false: a piece of chalk lets water climb up it. (a) False (b) True
19. 19.True or false: a sugar cube lets water climb up it. (a) False (b) True
20. 20.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a piece of chalk (d) a cotton thread
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a steel spoon
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) a balloon (d) a glass of water
25. 25.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
27. 27.💧 Which of these lets water climb up it? (a) a sugar cube (b) a glass marble (c) a piece of foil (d) a steel spoon
28. 28.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a glass marble (d) a paper towel
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) colour climbs up it (d) nothing ever happens
30. 30.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.⚖️ 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) time for colour to show (c) the amount of colour (d) the room it stands in
32. 32.True or false: a paper towel lets water climb up it. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
34. 34.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a glass marble
35. 35.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) food colour
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) yeast (d) a battery cell
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed

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