Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 425 · 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? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ 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) the amount of water (c) the room it stands in (d) time for colour to show
3. 3.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
4. 4.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a white flower (d) food colour
6. 6.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a paper towel (d) a glass marble
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
8. 8.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a rubber eraser (d) a glass marble
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a piece of foil (d) a plastic ruler
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
17. 17.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
18. 18.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a paper towel (d) a piece of foil
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) turmeric powder (d) a magnet
22. 22.💧 Which of these lets water climb up it? (a) a cotton thread (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
23. 23.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) a few hours of waiting
28. 28.True or false: a steel spoon lets water climb up it. (a) False (b) True
29. 29.🔍 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 water turns green (d) the flower floats away
30. 30.⚖️ 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) time for colour to show (c) the amount of water (d) the amount of colour
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a glass of water (d) a balloon
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a white flower (d) a mirror
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) a few hours of waiting
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a battery cell (d) a few hours of waiting
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a balloon (d) a white flower
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
37. 37.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
38. 38.🧺 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 balloon (d) a glass of water
39. 39.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
40. 40.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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