Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 472 · 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.🌼 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
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
3. 3.True or false: a sugar cube does not let water climb. (a) False (b) True
4. 4.⚖️ 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 amount of colour (c) time for colour to show
5. 5.⚖️ 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 amount of water (b) the kind of flower (c) time for colour to show (d) the room it stands in
6. 6.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a strip of cloth
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) food colour
8. 8.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
9. 9.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a mirror (d) a few hours of waiting
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
12. 12.True or false: a piece of chalk lets water climb up it. (a) True (b) False
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a glass of water (d) a balloon
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a sugar cube (d) a cotton thread
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
16. 16.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a flower stem (d) a strip of cloth
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.⚖️ 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 kind of flower
19. 19.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) a balloon (d) turmeric powder
21. 21.🔮 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
22. 22.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
23. 23.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.💧 Which of these lets water climb up it? (a) a cotton thread (b) a plastic ruler (c) a rubber eraser (d) a glass marble
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
27. 27.True or false: a strip of cloth lets water climb up it. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: a glass marble lets water climb up it. (a) True (b) False
31. 31.True or false: a steel spoon lets water climb up it. (a) False (b) True
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
34. 34.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a glass marble (d) a strip of cloth
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a steel spoon (d) a plastic ruler
38. 38.True or false: a plastic ruler lets water climb up it. (a) True (b) False
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) the length of the stem (c) the room it stands in (d) the kind of flower
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed

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