Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 689 · 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 glass of water for the coloured flower experiment? (a) needed (b) not needed
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
3. 3.⚖️ 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
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
5. 5.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
7. 7.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a piece of chalk (d) a glass marble
8. 8.⚖️ 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
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
10. 10.🔮 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 stay white (c) they fall off at once (d) they all turn green
11. 11.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
14. 14.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
15. 15.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a sugar cube
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) food colour (d) a glass of water
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) food colour (d) a white flower
18. 18.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a piece of foil (d) a steel spoon
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 amount of colour (b) the length of the stem (c) the room it stands in (d) time for colour to show
20. 20.⚖️ 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) True (b) False
21. 21.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a sugar cube
23. 23.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
24. 24.True or false: a plastic ruler lets water climb up it. (a) True (b) False
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a piece of foil (d) a flower stem
27. 27.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a magnet
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) food colour (d) turmeric powder
30. 30.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a cotton thread does not let water climb. (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.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a sugar cube (d) a paper towel
34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a piece of chalk (d) a sugar cube
35. 35.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a glass marble (d) a steel spoon
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
37. 37.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a rubber eraser
38. 38.⚖️ 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 amount of water (b) the kind of flower (c) the room it stands in (d) time for colour to show
39. 39.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a white flower (d) a balloon

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