Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 701 · 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 the one thing we change. (a) True (b) False
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
4. 4.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
5. 5.True or false: a piece of foil lets water climb up it. (a) True (b) False
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
7. 7.⚖️ 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 colour (c) the length of the stem
8. 8.True or false: a steel spoon does not let water climb. (a) False (b) True
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a glass of water (d) a white flower
10. 10.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a cotton thread (d) a piece of chalk
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a glass of water (d) food colour
12. 12.⚖️ 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 kind of flower
13. 13.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) a few hours of waiting
15. 15.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
16. 16.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a plastic ruler (d) a piece of foil
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a white flower (d) yeast
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
19. 19.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a paper towel (d) a sugar cube
20. 20.🧺 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 few hours of waiting
21. 21.🧺 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) yeast
22. 22.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a rubber eraser
23. 23.⚖️ 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 amount of water (b) the length of the stem (c) time for colour to show
24. 24.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of water
25. 25.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
26. 26.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
27. 27.🔮 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 turn two colours (d) they all turn green
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) food colour (d) a glass of water
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
30. 30.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
31. 31.🧺 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 white flower (d) turmeric powder
32. 32.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a cotton thread (d) a rubber eraser
33. 33.💧 Which of these does not let water climb? (a) a plastic ruler (b) a flower stem (c) a paper towel (d) a cotton thread
34. 34.True or false: a piece of foil does not let water climb. (a) True (b) False
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a cotton thread
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) food colour
39. 39.🔍 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
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a few hours of waiting (d) a glass of water

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