Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 48 · 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.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
2. 2.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
4. 4.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
6. 6.🧺 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) food colour (d) a glass of water
7. 7.🌼 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
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
10. 10.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of water
12. 12.True or false: a steel spoon lets water climb up it. (a) True (b) False
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a rubber eraser
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a mirror (d) a glass of water
16. 16.⚖️ 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 length of the stem (b) time for colour to show (c) the kind of flower
17. 17.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a magnet
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
20. 20.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
21. 21.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a piece of foil
22. 22.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a flower stem (c) a strip of cloth (d) a paper towel
25. 25.True or false: a piece of chalk lets water climb up it. (a) True (b) False
26. 26.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
27. 27.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
28. 28.⚖️ 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) the room it stands in (c) time for colour to show (d) the amount of water
29. 29.⚖️ 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 water (c) the length of the stem (d) time for colour to show
30. 30.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
31. 31.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) food colour (d) a white flower
34. 34.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a battery cell
37. 37.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a cotton thread (d) a steel spoon
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a cotton thread (d) a glass marble

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