Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 614 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) a few hours of waiting (d) food colour
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) food colour (d) a glass of water
3. 3.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a cotton thread (d) a piece of foil
4. 4.🌼 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
5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a glass marble
6. 6.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a piece of chalk does not let water climb. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
10. 10.🔍 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 water turns green (d) the petals turn bluish
11. 11.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
12. 12.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a glass of water (d) a battery cell
14. 14.🔮 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
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
16. 16.True or false: a plastic ruler lets water climb up it. (a) True (b) False
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
18. 18.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the kind of flower
19. 19.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
20. 20.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
21. 21.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.⚖️ 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
24. 24.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
25. 25.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
29. 29.⚖️ 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) False (b) True
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
32. 32.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a flower stem (d) a piece of foil
33. 33.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a steel spoon
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a glass of water (d) food colour
35. 35.🔮 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 all turn green (d) they stay white
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a balloon
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a glass marble (d) a steel spoon
38. 38.⚖️ 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) time for colour to show (c) the kind of flower (d) the room it stands in
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a mirror (d) a magnet
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) food colour (d) a white flower

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