Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 696 · 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.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
2. 2.⚖️ 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
3. 3.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a cotton thread (d) a piece of chalk
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the stem turns to ice (d) the water turns green
5. 5.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
6. 6.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
7. 7.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a piece of chalk
8. 8.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a piece of foil (d) a sugar cube
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a mirror (d) a balloon
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) food colour (d) a glass of water
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a glass marble (d) a strip of cloth
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a strip of cloth
15. 15.True or false: a sugar cube lets water climb up it. (a) False (b) True
16. 16.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
19. 19.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
20. 20.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a flower stem (d) a glass marble
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) yeast (d) a magnet
22. 22.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they all turn green (d) they stay white
23. 23.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
24. 24.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a balloon
28. 28.⚖️ 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) False (b) True
29. 29.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a cotton thread (d) a piece of chalk
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a paper towel (d) a piece of foil
32. 32.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a cotton thread
34. 34.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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 kept the same. (a) False (b) True
36. 36.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) yeast (d) a mirror
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.⚖️ 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 keep it the same (c) we measure it
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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