Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 235 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a few hours of waiting (d) a white flower
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ 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 amount of colour
4. 4.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a rubber eraser
5. 5.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
6. 6.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
7. 7.True or false: a piece of foil does not let water climb. (a) True (b) False
8. 8.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
10. 10.⚖️ 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
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
14. 14.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) turmeric powder (d) a white flower
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) food colour (d) a mirror
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) a balloon
20. 20.🔮 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
21. 21.True or false: a glass marble lets water climb up it. (a) True (b) False
22. 22.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.True or false: a rubber eraser does not let water climb. (a) True (b) False
25. 25.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
26. 26.⚖️ 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
27. 27.True or false: a strip of cloth lets water climb up it. (a) True (b) False
28. 28.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of colour
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) food colour (c) a white flower (d) a few hours of waiting
30. 30.True or false: a steel spoon lets water climb up it. (a) True (b) False
31. 31.⚖️ 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
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a paper towel (d) a glass marble
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a battery cell (d) a white flower
36. 36.🧺 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) yeast (d) food colour
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
38. 38.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
39. 39.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a glass marble (d) a plastic ruler
40. 40.True or false: a cotton thread lets water climb up it. (a) True (b) False

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