Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 936 · 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.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
2. 2.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
4. 4.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.⚖️ 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
6. 6.True or false: a rubber eraser lets water climb up it. (a) True (b) False
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) turmeric powder (d) a battery cell
9. 9.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
12. 12.🌼 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
13. 13.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the stem turns to ice (d) the petals turn bluish
14. 14.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a rubber eraser (d) a paper towel
15. 15.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
17. 17.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
18. 18.🛟 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
19. 19.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a sugar cube
21. 21.🔮 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
22. 22.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a steel spoon (d) a plastic ruler
23. 23.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a glass marble (d) a sugar cube
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
25. 25.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a balloon (d) a magnet
26. 26.⚖️ 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 length of the stem (b) the room it stands in (c) the amount of colour (d) time for colour to show
27. 27.True or false: a strip of cloth does not let water climb. (a) False (b) True
28. 28.⚖️ 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
29. 29.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
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 magnet is needed for the coloured flower experiment. (a) False (b) True
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a paper towel (d) a rubber eraser
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.⚖️ 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
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) True (b) False
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a few hours of waiting (d) a magnet
38. 38.⚖️ 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
39. 39.💧 Which of these does not let water climb? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a cotton thread
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a piece of chalk (d) a steel spoon

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