Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 710 · 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.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
2. 2.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
4. 4.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
8. 8.🌼 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
9. 9.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
10. 10.⚖️ 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 keep it the same (c) we change it
11. 11.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
12. 12.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) yeast (d) a white flower
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) food colour
15. 15.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) a white flower
17. 17.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 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
19. 19.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a flower stem (d) a cotton thread
21. 21.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a paper towel (d) a piece of foil
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a magnet (d) yeast
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) yeast (d) food colour
25. 25.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.True or false: a paper towel does not let water climb. (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 the one thing we change? (a) the room it stands in (b) the length of the stem (c) the amount of colour (d) time for colour to show
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.True or false: a flower stem does not let water climb. (a) True (b) False
33. 33.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a magnet (d) a few hours of waiting
35. 35.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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
38. 38.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
39. 39.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a cotton thread (d) a steel spoon
40. 40.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True

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