Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 522 · 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 is the odd one out? (a) a sugar cube (b) a piece of foil (c) a strip of cloth (d) a paper towel
2. 2.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a rubber eraser (d) a steel spoon
3. 3.⚖️ 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
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the water turns green (d) the flower floats away
5. 5.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
6. 6.True or false: a paper towel does not let water climb. (a) True (b) False
7. 7.True or false: a steel spoon lets water climb up it. (a) True (b) False
8. 8.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
9. 9.⚖️ 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
10. 10.True or false: a glass marble does not let water climb. (a) False (b) True
11. 11.💧 Which of these does not let water climb? (a) a plastic ruler (b) a paper towel (c) a piece of chalk (d) a flower stem
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a sugar cube (d) a rubber eraser
13. 13.⚖️ 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 kept the same. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a glass marble (b) a strip of cloth (c) a cotton thread (d) a piece of chalk
15. 15.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a white flower (d) a battery cell
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
19. 19.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) time for colour to show
20. 20.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a steel spoon (d) a cotton thread
21. 21.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a steel spoon (d) a sugar cube
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) turmeric powder (d) a white flower
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a rubber eraser
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) a few hours of waiting (d) a glass of water
25. 25.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
26. 26.⚖️ 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
27. 27.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
28. 28.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
31. 31.True or false: a sugar cube does not let water climb. (a) False (b) True
32. 32.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
34. 34.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a rubber eraser does not let water climb. (a) True (b) False
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
37. 37.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a glass of water
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a white flower (d) a glass of water
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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