Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 379 · 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.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
2. 2.🔍 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
3. 3.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) turmeric powder
5. 5.⚖️ 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) True (b) False
6. 6.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
8. 8.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a steel spoon (d) a glass marble
9. 9.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
10. 10.🔮 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
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a balloon (d) yeast
12. 12.⚖️ 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) time for colour to show (b) the length of the stem (c) the room it stands in (d) the amount of water
13. 13.True or false: a rubber eraser does not let water climb. (a) False (b) True
14. 14.⚖️ 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
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
16. 16.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a steel spoon
20. 20.⚖️ 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 measure it (c) we change it
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a flower stem (d) a plastic ruler
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.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
25. 25.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a paper towel (d) a plastic ruler
26. 26.🔮 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
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a steel spoon does not let water climb. (a) False (b) True
30. 30.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a piece of foil
33. 33.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a piece of foil
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a strip of cloth (d) a piece of chalk
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a few hours of waiting (d) a glass of water
38. 38.💧 Which of these does not let water climb? (a) a steel spoon (b) a flower stem (c) a strip of cloth (d) a sugar cube
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
40. 40.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed

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