Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 314 · 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 mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.⚖️ 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) time for colour to show (d) the kind of flower
4. 4.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a few hours of waiting (d) a balloon
6. 6.True or false: a cotton thread lets water climb up it. (a) False (b) True
7. 7.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a paper towel (d) a sugar cube
8. 8.True or false: a flower stem lets water climb up it. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a sugar cube
10. 10.🔍 Which is the odd one out? (a) a cotton thread (b) a piece of chalk (c) a piece of foil (d) a sugar cube
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
13. 13.True or false: a piece of chalk lets water climb up it. (a) True (b) False
14. 14.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
16. 16.⚖️ 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 kind of flower (c) the room it stands in (d) the length of the stem
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
19. 19.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a strip of cloth (d) a paper towel
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a few hours of waiting
21. 21.True or false: a sugar cube lets water climb up it. (a) True (b) False
22. 22.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) yeast (d) a battery cell
24. 24.🔮 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 all turn green (c) they turn two colours (d) they stay white
25. 25.True or false: a plastic ruler does not let water climb. (a) False (b) True
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
28. 28.🧺 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 few hours of waiting (d) food colour
29. 29.True or false: a strip of cloth does not let water climb. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a few hours of waiting
31. 31.⚖️ 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
32. 32.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
34. 34.⚖️ 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
35. 35.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
36. 36.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a glass of water (d) a mirror
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) food colour (d) a white flower
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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