Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 725 · 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.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
2. 2.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of foil (d) a piece of chalk
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a mirror (d) a battery cell
4. 4.⚖️ 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) False (b) True
5. 5.True or false: a paper towel lets water climb up it. (a) False (b) True
6. 6.True or false: a paper towel does not let water climb. (a) True (b) False
7. 7.⚖️ 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
8. 8.⚖️ 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) False (b) True
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
10. 10.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
12. 12.True or false: a piece of foil lets water climb up it. (a) True (b) False
13. 13.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
14. 14.True or false: a sugar cube does not let water climb. (a) False (b) True
15. 15.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the room it stands in
17. 17.⚖️ 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
18. 18.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a mirror (d) a magnet
20. 20.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
21. 21.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
27. 27.True or false: a steel spoon lets water climb up it. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a magnet (d) a balloon
29. 29.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a strip of cloth (d) a rubber eraser
30. 30.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a steel spoon (d) a plastic ruler
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) food colour (d) a glass of water
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) turmeric powder (d) a few hours of waiting
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a balloon (d) a few hours of waiting
35. 35.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a mirror (d) a few hours of waiting
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
40. 40.⚖️ 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

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