Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 214 · 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 is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a piece of foil (d) a rubber eraser
2. 2.True or false: a paper towel does not let water climb. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a strip of cloth (d) a rubber eraser
4. 4.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) food colour (d) a glass of water
6. 6.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a paper towel (d) a plastic ruler
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals lose water to air (c) the stem is hot (d) petals like colour
9. 9.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
12. 12.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
13. 13.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
14. 14.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
15. 15.⚖️ 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
16. 16.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
18. 18.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a sugar cube (d) a piece of chalk
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a battery cell
20. 20.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a paper towel (d) a piece of foil
21. 21.⚖️ 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) the amount of colour (c) time for colour to show
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a mirror (d) a few hours of waiting
24. 24.⚖️ 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) True (b) False
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a flower stem (d) a glass marble
26. 26.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a magnet
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a strip of cloth (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a piece of foil (b) a cotton thread (c) a steel spoon (d) a plastic ruler
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a balloon (d) a mirror
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a cotton thread (d) a flower stem
33. 33.⚖️ 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 amount of water (b) time for colour to show (c) the length of the stem
34. 34.True or false: a sugar cube lets water climb up it. (a) False (b) True
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.True or false: a steel spoon lets water climb up it. (a) False (b) True
37. 37.⚖️ 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 amount of colour
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
39. 39.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
40. 40.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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