Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 712 · 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 cotton thread does not let water climb. (a) False (b) True
2. 2.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (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 “time for colour to show”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔍 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 petals turn bluish (d) the stem turns to ice
6. 6.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of colour
7. 7.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
9. 9.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a piece of chalk does not let water climb. (a) True (b) False
11. 11.⚖️ 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 the one thing we change. (a) True (b) False
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a cotton thread (d) a paper towel
16. 16.⚖️ 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
17. 17.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a paper towel (d) a strip of cloth
18. 18.True or false: a flower stem does not let water climb. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a flower stem (d) a piece of foil
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a mirror (d) yeast
21. 21.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
24. 24.💧 Which of these does not let water climb? (a) a flower stem (b) a plastic ruler (c) a cotton thread (d) a strip of cloth
25. 25.🧺 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 glass of water
26. 26.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a steel spoon
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a few hours of waiting (d) food colour
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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 what we measure. (a) True (b) False
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) yeast (d) a battery cell
40. 40.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False

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