Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 992 · 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.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) yeast (d) a white flower
4. 4.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
5. 5.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
6. 6.True or false: a strip of cloth lets water climb up it. (a) True (b) False
7. 7.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
8. 8.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of water (c) the length of the stem
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
11. 11.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a piece of foil (d) a strip of cloth
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
14. 14.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) turmeric powder
16. 16.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) yeast (d) a few hours of waiting
18. 18.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a strip of cloth
19. 19.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the kind of flower
20. 20.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a glass marble (d) a piece of foil
21. 21.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: a sugar cube does not let water climb. (a) True (b) False
23. 23.⚖️ 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) the amount of water (c) the amount of colour (d) time for colour to show
24. 24.🧺 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 few hours of waiting (d) yeast
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a flower stem (d) a piece of chalk
28. 28.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
29. 29.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a paper towel (d) a strip of cloth
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a battery cell (d) a white flower
32. 32.🔍 Which is the odd one out? (a) a piece of chalk (b) a strip of cloth (c) a rubber eraser (d) a paper towel
33. 33.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
34. 34.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a flower stem does not let water climb. (a) False (b) True
38. 38.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
39. 39.🛟 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
40. 40.True or false: a glass marble lets water climb up it. (a) True (b) False

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