Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 727 · 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? True or false: the length of the stem is what we measure. (a) False (b) True
2. 2.⚖️ 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 amount of water
3. 3.⚖️ 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
4. 4.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
5. 5.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a rubber eraser (d) a flower stem
6. 6.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a glass of water (d) a battery cell
8. 8.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
9. 9.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
11. 11.⚖️ 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 room it stands in (b) the amount of water (c) time for colour to show (d) the amount of colour
12. 12.True or false: a sugar cube lets water climb up it. (a) False (b) True
13. 13.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a magnet (d) a few hours of waiting
16. 16.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: a steel spoon lets water climb up it. (a) False (b) True
18. 18.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a flower stem (d) a plastic ruler
20. 20.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) nothing ever happens (d) it sinks at once
21. 21.🧺 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) yeast
22. 22.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) turmeric powder (d) a mirror
24. 24.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a piece of foil (d) a paper towel
25. 25.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
26. 26.⚖️ 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) False (b) True
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a magnet
30. 30.🧺 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 glass of water (d) a battery cell
31. 31.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
32. 32.True or false: a strip of cloth lets water climb up it. (a) False (b) True
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
34. 34.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
35. 35.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a flower stem
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
39. 39.⚖️ 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) True (b) False
40. 40.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a paper towel

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