Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 554 · 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) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
2. 2.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) food colour (d) a few hours of waiting
4. 4.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a piece of foil (d) a rubber eraser
5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
6. 6.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a mirror (d) a few hours of waiting
8. 8.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the stem turns blue (d) the petals turn red
9. 9.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
10. 10.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
11. 11.⚖️ 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 room it stands in (c) the kind of flower (d) the length of the stem
12. 12.True or false: a cotton thread lets water climb up it. (a) True (b) False
13. 13.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
14. 14.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of water
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a glass of water (d) a balloon
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🌼 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
20. 20.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
21. 21.⚖️ 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
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it turns to plastic (c) it sinks at once (d) nothing ever happens
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a balloon
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a magnet
25. 25.⚖️ 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 what we measure. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a paper towel (d) a plastic ruler
27. 27.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.True or false: a steel spoon does not let water climb. (a) False (b) True
29. 29.⚖️ 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 measure it (c) we change it
30. 30.⚖️ 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
31. 31.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a piece of foil lets water climb up it. (a) False (b) True
34. 34.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
35. 35.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a steel spoon (d) a rubber eraser
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a mirror (d) a balloon
38. 38.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a rubber eraser (d) a sugar cube
39. 39.🔮 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 fall off at once (d) they all turn green
40. 40.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on

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