Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 432 · 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) food colour (b) a white flower (c) a few hours of waiting (d) a balloon
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) the length of the stem (b) time for colour to show (c) the amount of water
3. 3.⚖️ 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 what we measure. (a) True (b) False
4. 4.⚖️ 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 length of the stem (b) the kind of flower (c) the room it stands in (d) the amount of colour
5. 5.⚖️ 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
6. 6.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a strip of cloth (d) a glass marble
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a magnet (d) a glass of water
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a steel spoon (d) a cotton thread
12. 12.🔍 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 water turns green (d) the stem turns to ice
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) a glass of water (d) a few hours of waiting
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
17. 17.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
19. 19.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
21. 21.🛟 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
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a glass of water
23. 23.True or false: a piece of foil does not let water climb. (a) False (b) True
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a few hours of waiting
25. 25.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
26. 26.True or false: a sugar cube lets water climb up it. (a) False (b) True
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a sugar cube does not let water climb. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a cotton thread (d) a piece of foil
30. 30.⚖️ 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
31. 31.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a piece of chalk lets water climb up it. (a) False (b) True
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
36. 36.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
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 what we measure. (a) False (b) True
39. 39.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it

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