Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 437 · 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 room it stands in is kept the same. (a) True (b) False
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a white flower (d) a glass of water
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a cotton thread
4. 4.⚖️ 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
5. 5.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a battery cell
9. 9.🧺 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
10. 10.⚖️ 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 water (b) the kind of flower (c) the amount of colour (d) the length of the stem
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a magnet (d) food colour
13. 13.⚖️ 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 what we measure. (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 what we measure. (a) False (b) True
15. 15.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
19. 19.🔮 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 fall off at once (c) they all turn green (d) they stay white
20. 20.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
21. 21.💧 Which of these does not let water climb? (a) a paper towel (b) a glass marble (c) a cotton thread (d) a sugar cube
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a magnet (d) a battery cell
23. 23.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
24. 24.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
25. 25.True or false: a piece of foil lets water climb up it. (a) False (b) True
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
27. 27.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a strip of cloth (d) a cotton thread
28. 28.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
29. 29.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a cotton thread (d) a sugar cube
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) yeast
31. 31.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.⚖️ 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
35. 35.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
36. 36.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a plastic ruler does not let water climb. (a) True (b) False
38. 38.⚖️ 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
39. 39.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a plastic ruler (d) a cotton thread

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