Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 249 · 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.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a piece of chalk (d) a steel spoon
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
3. 3.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) petals like colour (d) the stem is hot
6. 6.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a paper towel (d) a sugar cube
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.🔍 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 petals turn bluish (d) the water turns green
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
10. 10.⚖️ 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 kind of flower
11. 11.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a strip of cloth (d) a piece of foil
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a paper towel (d) a cotton thread
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
15. 15.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a glass marble (d) a paper towel
16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
17. 17.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
18. 18.True or false: a sugar cube lets water climb up it. (a) False (b) True
19. 19.🔮 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 stay white (c) they turn two colours (d) they fall off at once
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
21. 21.⚖️ 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 keep it the same (b) we measure it (c) we change it
22. 22.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.True or false: a plastic ruler does not let water climb. (a) False (b) True
24. 24.True or false: a paper towel does not let water climb. (a) True (b) False
25. 25.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a balloon (d) a white flower
27. 27.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a glass marble (d) a sugar cube
28. 28.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a piece of foil (d) a cotton thread
29. 29.⚖️ 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 amount of water (d) the kind of flower
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.⚖️ 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 the one thing we change. (a) False (b) True
32. 32.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a cotton thread (b) a rubber eraser (c) a sugar cube (d) a piece of chalk
35. 35.True or false: a paper towel lets water climb up it. (a) False (b) True
36. 36.True or false: a steel spoon does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a piece of foil (d) a piece of chalk
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
39. 39.True or false: a glass marble lets water climb up it. (a) False (b) True
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a few hours of waiting (d) food colour

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