Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 121 · 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.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
2. 2.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a glass of water (d) a white flower
5. 5.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a piece of chalk (d) a steel spoon
6. 6.True or false: a paper towel does not let water climb. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a strip of cloth (d) a cotton thread
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) food colour (d) turmeric powder
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a magnet (d) a mirror
10. 10.🧺 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) turmeric powder (d) a glass of water
11. 11.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
12. 12.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.True or false: a strip of cloth does not let water climb. (a) True (b) False
14. 14.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a piece of foil
17. 17.⚖️ 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
18. 18.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a magnet (d) a few hours of waiting
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) food colour (d) a mirror
22. 22.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a plastic ruler (d) a paper towel
25. 25.True or false: a piece of chalk does not let water climb. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a cotton thread
27. 27.⚖️ 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
28. 28.True or false: a flower stem lets water climb up it. (a) False (b) True
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a paper towel
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
32. 32.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a piece of chalk (d) a sugar cube
33. 33.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
34. 34.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ 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 amount of water (c) the kind of flower (d) the length of the stem
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
38. 38.⚖️ 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 the one thing we change. (a) True (b) False
39. 39.⚖️ 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 colour (b) the length of the stem (c) the room it stands in (d) the kind of flower
40. 40.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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