Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 322 · 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 needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a battery cell (d) a glass of water
2. 2.💧 Which of these does not let water climb? (a) a sugar cube (b) a strip of cloth (c) a paper towel (d) a steel spoon
3. 3.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
4. 4.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a cotton thread (d) a strip of cloth
10. 10.🔮 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 all turn green (c) they fall off at once (d) they turn two colours
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) yeast
12. 12.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
13. 13.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
14. 14.⚖️ 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 amount of colour (c) time for colour to show (d) the length of the stem
15. 15.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
17. 17.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a flower stem
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a glass marble (d) a rubber eraser
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
21. 21.⚖️ 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) False (b) True
22. 22.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
23. 23.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a strip of cloth
25. 25.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
26. 26.🔮 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
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a white flower
28. 28.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a magnet
30. 30.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
31. 31.🧺 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) turmeric powder (d) a few hours of waiting
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
33. 33.True or false: a cotton thread lets water climb up it. (a) False (b) True
34. 34.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of colour
35. 35.True or false: a piece of foil lets water climb up it. (a) False (b) True
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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
38. 38.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
39. 39.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) yeast (d) a few hours of waiting

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