Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 769 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) a white flower
2. 2.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 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 battery cell (d) a few hours of waiting
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
6. 6.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a balloon (d) a glass of water
10. 10.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.True or false: a plastic ruler lets water climb up it. (a) True (b) False
12. 12.💧 Which of these does not let water climb? (a) a piece of chalk (b) a flower stem (c) a strip of cloth (d) a rubber eraser
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the room it stands in (d) the amount of colour
14. 14.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a glass marble (d) a plastic ruler
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) turmeric powder
16. 16.⚖️ 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
17. 17.True or false: a strip of cloth does not let water climb. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a paper towel
19. 19.⚖️ 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 kept the same. (a) False (b) True
20. 20.⚖️ 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 colour
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a steel spoon (c) a cotton thread (d) a piece of chalk
22. 22.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a paper towel
24. 24.💧 Which of these does not let water climb? (a) a cotton thread (b) a plastic ruler (c) a sugar cube (d) a piece of chalk
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a glass of water (d) a few hours of waiting
26. 26.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a cotton thread (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 measure it (b) we change it (c) we keep it the same
28. 28.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
29. 29.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
30. 30.True or false: a piece of foil lets water climb up it. (a) True (b) False
31. 31.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a few hours of waiting (d) a white flower
33. 33.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) a glass of water
37. 37.True or false: a flower stem lets water climb up it. (a) False (b) True
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
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.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True

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