Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 937 · 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 change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) food colour (d) a glass of water
4. 4.True or false: a paper towel lets water climb up it. (a) True (b) False
5. 5.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
6. 6.True or false: a plastic ruler lets water climb up it. (a) True (b) False
7. 7.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
8. 8.⚖️ 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) time for colour to show (b) the room it stands in (c) the kind of flower (d) the length of the stem
9. 9.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
10. 10.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
11. 11.True or false: a flower stem does not let water climb. (a) True (b) False
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
13. 13.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a strip of cloth (d) a paper towel
15. 15.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 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 battery cell (d) a white flower
17. 17.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a rubber eraser (d) a flower stem
18. 18.True or false: a steel spoon does not let water climb. (a) True (b) False
19. 19.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
20. 20.⚖️ 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
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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) time for colour to show (c) the amount of water (d) the amount of colour
23. 23.🔮 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 fall off at once (c) they turn two colours (d) they stay white
24. 24.True or false: a rubber eraser lets water climb up it. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a paper towel (d) a cotton thread
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) a glass of water (d) a battery cell
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a glass marble
29. 29.⚖️ 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
30. 30.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) yeast (d) a glass of water
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a sugar cube (d) a steel spoon
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.⚖️ 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
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
38. 38.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a battery cell (d) a white flower

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