Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 375 · 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.⚖️ 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 keep it the same (b) we measure it (c) we change it
2. 2.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.True or false: a glass marble does not let water climb. (a) False (b) True
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.True or false: a steel spoon does not let water climb. (a) False (b) True
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a glass of water (d) a few hours of waiting
9. 9.⚖️ 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 length of the stem (d) the room it stands in
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
12. 12.True or false: a cotton thread does not let water climb. (a) True (b) False
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
14. 14.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
16. 16.🌼 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
17. 17.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
18. 18.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a steel spoon (d) a cotton thread
19. 19.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a rubber eraser (d) a sugar cube
20. 20.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a flower stem
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a white flower (d) food colour
22. 22.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a strip of cloth (d) a glass marble
23. 23.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
24. 24.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is what we measure. (a) False (b) True
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) a magnet
28. 28.True or false: a sugar cube does not let water climb. (a) True (b) False
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.True or false: a rubber eraser does not let water climb. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a piece of foil (d) a piece of chalk
32. 32.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a paper towel
33. 33.🧺 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) a mirror
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of water
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
37. 37.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
38. 38.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a cotton thread
39. 39.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) turmeric powder (c) a glass of water (d) a few hours of waiting

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