Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 726 · 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? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 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) a white flower
4. 4.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
5. 5.True or false: a sugar cube lets water climb up it. (a) True (b) False
6. 6.🔮 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
7. 7.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
9. 9.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
11. 11.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
12. 12.💧 Which of these does not let water climb? (a) a steel spoon (b) a sugar cube (c) a piece of chalk (d) a paper towel
13. 13.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
15. 15.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
17. 17.True or false: a piece of chalk does not let water climb. (a) True (b) False
18. 18.⚖️ 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 change it (c) we measure it
19. 19.True or false: a glass marble lets water climb up it. (a) False (b) True
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a mirror (d) a glass of water
23. 23.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) a white flower (d) food colour
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ 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
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a paper towel (d) a flower stem
29. 29.True or false: a sugar cube does not let water climb. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a paper towel (d) a glass marble
31. 31.True or false: a flower stem does not let water climb. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a flower stem (d) a cotton thread
33. 33.💧 Which of these does not let water climb? (a) a paper towel (b) a rubber eraser (c) a flower stem (d) a piece of chalk
34. 34.⚖️ 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 amount of colour
35. 35.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
37. 37.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
40. 40.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a cotton thread

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