Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 641 · 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 all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
2. 2.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a strip of cloth (d) a sugar cube
3. 3.⚖️ 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
4. 4.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a sugar cube
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 stem turns to ice (d) the petals turn bluish
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
7. 7.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.True or false: a cotton thread does not let water climb. (a) False (b) True
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
11. 11.⚖️ 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 length of the stem (c) the room it stands in (d) time for colour to show
12. 12.True or false: a steel spoon does not let water climb. (a) True (b) False
13. 13.⚖️ 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 change it (c) we measure it
14. 14.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
15. 15.⚖️ 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) False (b) True
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a paper towel (d) a strip of cloth
18. 18.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
19. 19.True or false: a sugar cube does not let water climb. (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 the one thing we change? (a) the room it stands in (b) the length of the stem (c) the amount of colour (d) time for colour to show
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a glass marble (c) a plastic ruler (d) a rubber eraser
22. 22.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 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 white flower (d) a magnet
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a few hours of waiting (d) food colour
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a cotton thread (d) a steel spoon
26. 26.⚖️ 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
27. 27.⚖️ 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 water
28. 28.⚖️ 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
29. 29.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a few hours of waiting (d) a magnet
31. 31.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a piece of chalk (d) a paper towel
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
34. 34.🧺 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
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a steel spoon
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a steel spoon (d) a piece of chalk
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a white flower
40. 40.⚖️ 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 measure it (c) we keep it the same

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