Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 179 · 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 white flower for the coloured flower experiment? (a) needed (b) not needed
2. 2.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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 amount of water (b) the amount of colour (c) the length of the stem (d) time for colour to show
4. 4.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a mirror
7. 7.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.True or false: a rubber eraser lets water climb up it. (a) True (b) False
9. 9.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a sugar cube
10. 10.🌼 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
11. 11.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the room it stands in (b) the kind of flower (c) time for colour to show (d) the amount of water
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a paper towel (d) a flower stem
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
16. 16.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a sugar cube (d) a glass marble
17. 17.True or false: a sugar cube lets water climb up it. (a) True (b) False
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a white flower (d) a few hours of waiting
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
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 change it (b) we measure it (c) we keep it the same
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
25. 25.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
26. 26.True or false: a strip of cloth lets water climb up it. (a) True (b) False
27. 27.🔮 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 stay white (c) they fall off at once (d) they turn two colours
28. 28.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a glass marble does not let water climb. (a) False (b) True
30. 30.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
31. 31.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
32. 32.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a rubber eraser (d) a strip of cloth
34. 34.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a steel spoon
35. 35.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a rubber eraser (d) a plastic ruler
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a rubber eraser (d) a plastic ruler
37. 37.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
38. 38.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
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 the one thing we change. (a) False (b) True

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