Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 129 · 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.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
3. 3.⚖️ 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 amount of water (c) the length of the stem
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) food colour (c) yeast (d) a battery cell
6. 6.True or false: a strip of cloth lets water climb up it. (a) False (b) True
7. 7.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) food colour (d) a glass of water
10. 10.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a white flower (d) food colour
12. 12.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) yeast (d) a glass of water
15. 15.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a glass marble lets water climb up it. (a) True (b) False
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a glass of water (d) a few hours of waiting
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a paper towel (d) a cotton thread
22. 22.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
23. 23.⚖️ 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 amount of water (b) time for colour to show (c) the amount of colour (d) the length of the stem
24. 24.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a glass of water 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? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a flower stem (d) a cotton thread
29. 29.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
30. 30.💧 Which of these lets water climb up it? (a) a steel spoon (b) a cotton thread (c) a plastic ruler (d) a glass marble
31. 31.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
32. 32.🔮 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 stay white (c) they all turn green (d) they turn two colours
33. 33.True or false: a sugar cube lets water climb up it. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a paper towel
35. 35.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a piece of foil
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a glass marble (d) a plastic ruler
37. 37.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a piece of foil (d) a rubber eraser
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a battery cell
39. 39.🌼 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
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a mirror (d) a white flower

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