Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 583 · 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.⚖️ 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) True (b) False
2. 2.🧺 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 magnet (d) a glass of water
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
4. 4.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
5. 5.True or false: a glass marble does not let water climb. (a) False (b) True
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a mirror (d) a glass of water
7. 7.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
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 kind of flower
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
10. 10.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
11. 11.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
12. 12.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a piece of chalk (d) a glass marble
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) yeast (d) a magnet
14. 14.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
15. 15.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show (d) the kind of flower
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
17. 17.⚖️ 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
18. 18.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of foil (c) a piece of chalk (d) a flower stem
19. 19.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a strip of cloth (d) a paper towel
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) a battery cell
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
22. 22.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a steel spoon (d) a plastic ruler
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
26. 26.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.⚖️ 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 the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
30. 30.🔍 Which is the odd one out? (a) a cotton thread (b) a plastic ruler (c) a glass marble (d) a steel spoon
31. 31.⚖️ 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 amount of water (c) the amount of colour (d) time for colour to show
32. 32.⚖️ 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) True (b) False
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a cotton thread (d) a paper towel
34. 34.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a few hours of waiting (d) a glass of water
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a paper towel (d) a steel spoon
40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a cotton thread (d) a sugar cube

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