Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 817 · 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.⚖️ 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 change it (c) we keep it the same
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a battery cell
4. 4.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) food colour (d) a few hours of waiting
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
8. 8.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a magnet
10. 10.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a few hours of waiting (d) a glass of water
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
12. 12.⚖️ 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) True (b) False
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a paper towel (d) a plastic ruler
14. 14.⚖️ 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 change it (c) we measure it
15. 15.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
16. 16.True or false: a rubber eraser lets water climb up it. (a) False (b) True
17. 17.🔮 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 fall off at once (d) they stay white
18. 18.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a strip of cloth (d) a steel spoon
19. 19.True or false: a glass marble lets water climb up it. (a) False (b) True
20. 20.True or false: a piece of foil lets water climb up it. (a) True (b) False
21. 21.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
24. 24.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
25. 25.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
28. 28.🧺 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) yeast (d) food colour
29. 29.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a piece of foil
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.True or false: a piece of foil does not let water climb. (a) False (b) True
32. 32.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
33. 33.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a glass marble
34. 34.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
36. 36.⚖️ 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) the room it stands in (c) time for colour to show
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a paper towel
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a few hours of waiting (d) a balloon

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