Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 142 · 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.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
2. 2.⚖️ 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
3. 3.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
5. 5.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a flower stem (d) a rubber eraser
6. 6.⚖️ 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 room it stands in (b) the length of the stem (c) time for colour to show (d) the amount of colour
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) food colour
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) a glass of water
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) yeast (d) a white flower
11. 11.True or false: a flower stem lets water climb up it. (a) False (b) True
12. 12.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
13. 13.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a strip of cloth
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a battery cell
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a glass of water (d) food colour
16. 16.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: a steel spoon does not let water climb. (a) False (b) True
18. 18.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of chalk (d) a rubber eraser
20. 20.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
23. 23.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a plastic ruler (d) a paper towel
24. 24.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
25. 25.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
27. 27.⚖️ 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
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
29. 29.⚖️ 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
30. 30.True or false: a piece of chalk lets water climb up it. (a) False (b) True
31. 31.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a piece of foil
33. 33.⚖️ 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
34. 34.True or false: a sugar cube does not let water climb. (a) True (b) False
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) food colour
38. 38.True or false: a piece of foil does not let water climb. (a) False (b) True
39. 39.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
40. 40.True or false: a rubber eraser lets water climb up it. (a) True (b) False

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