Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 951 · 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? Which of these is kept the same? (a) time for colour to show (b) the kind of flower (c) the length of the stem
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a balloon (d) a magnet
3. 3.⚖️ 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
4. 4.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) through tiny stem tubes (d) it is sprayed on
5. 5.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a sugar cube (d) a glass marble
6. 6.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
8. 8.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
12. 12.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem (d) the amount of water
13. 13.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
14. 14.⚖️ 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
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.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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 colour (c) the amount of water (d) the kind of flower
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a battery cell
21. 21.🧺 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) yeast (d) a glass of water
22. 22.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a mirror
24. 24.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a plastic ruler (d) a piece of chalk
25. 25.⚖️ 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
26. 26.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
27. 27.⚖️ 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 change it (c) we measure it
28. 28.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a cotton thread (d) a steel spoon
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
31. 31.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a glass marble
32. 32.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a steel spoon (d) a flower stem
33. 33.⚖️ 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 the one thing we change. (a) True (b) False
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) food colour (d) a few hours of waiting
35. 35.🔍 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 petals turn bluish (d) the stem turns to ice
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a few hours of waiting (d) food colour
37. 37.🔮 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 stay white (c) they fall off at once (d) they all turn green
38. 38.⚖️ 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 what we measure. (a) False (b) True
39. 39.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
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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