Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 797 · 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 flower stem lets water climb up it. (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 yeast for the coloured flower experiment? (a) needed (b) not needed
4. 4.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a strip of cloth does not let water climb. (a) False (b) True
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
8. 8.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
9. 9.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a rubber eraser (d) a paper towel
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
13. 13.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a strip of cloth
14. 14.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the room it stands in
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 change it (b) we measure it (c) we keep it the same
16. 16.🧺 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) a white flower (d) a magnet
17. 17.⚖️ 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
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
19. 19.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a plastic ruler
20. 20.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
21. 21.⚖️ 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 kind of flower (c) time for colour to show
22. 22.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a flower stem (d) a steel spoon
23. 23.⚖️ 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) time for colour to show (c) the amount of water
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
25. 25.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
26. 26.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of foil (c) a piece of chalk (d) a sugar cube
27. 27.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) yeast (d) a white flower
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
33. 33.⚖️ 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
34. 34.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a steel spoon lets water climb up it. (a) False (b) True
37. 37.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
38. 38.⚖️ 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 kept the same. (a) False (b) True
39. 39.⚖️ 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 colour (b) time for colour to show (c) the kind of flower (d) the length of the stem
40. 40.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed

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