Capillary Action Flower Experiment Worksheet

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

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