Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 753 · 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.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
3. 3.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a few hours of waiting (d) turmeric powder
6. 6.True or false: a paper towel lets water climb up it. (a) True (b) False
7. 7.True or false: a plastic ruler lets water climb up it. (a) False (b) True
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
10. 10.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🧺 Do we need a glass of water 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 the one thing we change. (a) False (b) True
13. 13.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
14. 14.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a white flower (d) a few hours of waiting
17. 17.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) yeast (d) a white flower
19. 19.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
20. 20.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a cotton thread (d) a piece of foil
21. 21.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the length of the stem (c) the amount of colour (d) the room it stands in
23. 23.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a white flower (d) a battery cell
25. 25.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a rubber eraser (d) a steel spoon
27. 27.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a flower stem (d) a piece of chalk
28. 28.⚖️ 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) time for colour to show (c) the length of the stem (d) the amount of water
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a paper towel
31. 31.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a glass marble (d) a rubber eraser
32. 32.⚖️ 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
33. 33.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
34. 34.⚖️ 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) True (b) False
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a white flower (d) a glass of water
36. 36.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
38. 38.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a steel spoon (c) a plastic ruler (d) a piece of foil
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic

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