Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 564 · 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? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: a cotton thread lets water climb up it. (a) False (b) True
3. 3.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a sugar cube (d) a plastic ruler
4. 4.⚖️ 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) True (b) False
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a few hours of waiting (d) food colour
7. 7.⚖️ 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) False (b) True
8. 8.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a strip of cloth (d) a glass marble
9. 9.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a steel spoon (d) a glass marble
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a mirror (d) a white flower
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a few hours of waiting (d) a white flower
16. 16.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
17. 17.🛟 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
18. 18.⚖️ 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) True (b) False
19. 19.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
20. 20.⚖️ 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) True (b) False
21. 21.True or false: a rubber eraser does not let water climb. (a) False (b) True
22. 22.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
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 length of the stem (b) time for colour to show (c) the amount of water
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
25. 25.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
26. 26.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a flower stem (d) a steel spoon
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a piece of chalk
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a magnet (d) yeast
33. 33.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a paper towel does not let water climb. (a) True (b) False
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a paper towel (d) a plastic ruler
39. 39.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
40. 40.True or false: a paper towel lets water climb up it. (a) True (b) False

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