Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 318 · 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 is not needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a few hours of waiting (d) a glass of water
2. 2.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
3. 3.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a paper towel (d) a steel spoon
4. 4.True or false: a steel spoon does not let water climb. (a) False (b) True
5. 5.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
6. 6.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a plastic ruler (d) a cotton thread
7. 7.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 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) a glass of water (d) a white flower
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
10. 10.🔍 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
11. 11.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a plastic ruler
12. 12.True or false: a paper towel lets water climb up it. (a) True (b) False
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
14. 14.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a glass marble (d) a sugar cube
15. 15.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a glass marble (d) a plastic ruler
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.⚖️ 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 change it (c) we keep it the same
18. 18.True or false: a flower stem lets water climb up it. (a) True (b) False
19. 19.⚖️ 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 kept the same. (a) True (b) False
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a magnet (d) a battery cell
21. 21.True or false: a rubber eraser lets water climb up it. (a) True (b) False
22. 22.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a mirror
24. 24.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
25. 25.⚖️ 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) False (b) True
26. 26.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
27. 27.True or false: a sugar cube lets water climb up it. (a) False (b) True
28. 28.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a steel spoon (d) a piece of foil
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a few hours of waiting
32. 32.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a sugar cube (d) a flower stem
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
34. 34.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a piece of chalk
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a battery cell (d) food colour
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 kind of flower (b) time for colour to show (c) the room it stands in (d) the length of the stem
39. 39.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
40. 40.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands

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