Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 801 · 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) food colour (c) a glass of water (d) a few hours of waiting
2. 2.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a few hours of waiting (d) a mirror
5. 5.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem
6. 6.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) a magnet
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a glass of water (d) food colour
10. 10.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) yeast (d) a white flower
14. 14.💧 Which of these does not let water climb? (a) a cotton thread (b) a plastic ruler (c) a strip of cloth (d) a paper towel
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) food colour (d) a few hours of waiting
16. 16.True or false: a paper towel lets water climb up it. (a) False (b) True
17. 17.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
18. 18.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
19. 19.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals lose water to air (d) petals like colour
21. 21.True or false: a steel spoon does not let water climb. (a) False (b) True
22. 22.⚖️ 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
23. 23.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a piece of foil (d) a cotton thread
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a white flower
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 what we measure. (a) True (b) False
27. 27.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) melting (d) magnetism
31. 31.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.⚖️ 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
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
34. 34.⚖️ 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 the one thing we change. (a) False (b) True
35. 35.⚖️ 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 water (c) the amount of colour (d) time for colour to show
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a balloon (d) food colour
37. 37.True or false: yeast 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 mirror (b) turmeric powder (c) a glass of water (d) a magnet
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a cotton thread (d) a rubber eraser

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