Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 427 · 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.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a piece of chalk (d) a glass marble
2. 2.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a cotton thread (d) a glass marble
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a glass of water
4. 4.True or false: a cotton thread does not let water climb. (a) False (b) True
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) nothing ever happens (d) it sinks at once
6. 6.True or false: a glass marble does not let water climb. (a) True (b) False
7. 7.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
9. 9.⚖️ 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
10. 10.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a few hours of waiting (d) food colour
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a few hours of waiting (d) yeast
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
16. 16.⚖️ 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) True (b) False
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.⚖️ 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
19. 19.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
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 magnet
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
22. 22.💧 Which of these does not let water climb? (a) a flower stem (b) a rubber eraser (c) a cotton thread (d) a paper towel
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a white flower (d) a glass of water
25. 25.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
26. 26.⚖️ 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) False (b) True
27. 27.💧 Which of these does not let water climb? (a) a sugar cube (b) a glass marble (c) a piece of chalk (d) a strip of cloth
28. 28.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
29. 29.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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 amount of colour (d) the amount of water
35. 35.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they turn two colours (c) they all turn green (d) they fall off at once
36. 36.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
37. 37.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a plastic ruler (d) a sugar cube
38. 38.True or false: a piece of chalk does not let water climb. (a) True (b) False
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a glass of water (d) yeast
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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