Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 194 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
4. 4.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a magnet (d) a few hours of waiting
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
6. 6.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a steel spoon (d) a plastic ruler
8. 8.⚖️ 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 room it stands in
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a few hours of waiting (d) food colour
10. 10.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) wipe them on walls
11. 11.True or false: a plastic ruler lets water climb up it. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a cotton thread
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
14. 14.⚖️ 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
15. 15.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.⚖️ 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) the amount of water (d) the kind of flower
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a few hours of waiting
18. 18.🔍 Which is the odd one out? (a) a paper towel (b) a steel spoon (c) a plastic ruler (d) a piece of foil
19. 19.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) turmeric powder (d) a magnet
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) yeast (d) food colour
24. 24.True or false: a glass marble does not let water climb. (a) False (b) True
25. 25.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
26. 26.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) food colour
28. 28.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a glass marble (d) a strip of cloth
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ 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) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a glass of water (d) a battery cell
33. 33.🔍 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
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ 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) True (b) False
37. 37.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
38. 38.🌼 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
39. 39.⚖️ 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) True (b) False
40. 40.⚖️ 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) False (b) True

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