Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 431 · 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.🧺 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
2. 2.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a strip of cloth
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a paper towel (c) a plastic ruler (d) a glass marble
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a paper towel
9. 9.True or false: a flower stem does not let water climb. (a) True (b) False
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
11. 11.True or false: a piece of chalk does not let water climb. (a) False (b) True
12. 12.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
13. 13.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
14. 14.⚖️ 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 amount of colour (c) the kind of flower (d) time for colour to show
15. 15.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
17. 17.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🧺 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) yeast (d) a glass of water
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a steel spoon lets water climb up it. (a) True (b) False
21. 21.⚖️ 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 room it stands in
22. 22.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a flower stem (d) a plastic ruler
23. 23.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a sugar cube (d) a plastic ruler
24. 24.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a few hours of waiting (d) a white flower
26. 26.True or false: a piece of foil lets water climb up it. (a) False (b) True
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) food colour (d) a magnet
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a balloon (d) yeast
29. 29.🔮 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 all turn green (c) they fall off at once (d) they turn two colours
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a plastic ruler (d) a sugar cube
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
34. 34.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a piece of chalk
35. 35.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a sugar cube (d) a plastic ruler
36. 36.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
37. 37.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
38. 38.💧 Which of these does not let water climb? (a) a piece of foil (b) a strip of cloth (c) a paper towel (d) a sugar cube
39. 39.⚖️ 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) the room it stands in (c) the kind of flower (d) time for colour to show
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 colour”? (a) we keep it the same (b) we change it (c) we measure it

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