Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 474 · 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 plastic ruler (b) a glass marble (c) a steel spoon (d) a piece of chalk
2. 2.⚖️ 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
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
4. 4.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
6. 6.🛟 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
7. 7.🧺 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) food colour (d) a magnet
8. 8.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) food colour
10. 10.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a strip of cloth (d) a rubber eraser
11. 11.⚖️ 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
12. 12.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
13. 13.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
14. 14.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a glass marble (d) a flower stem
17. 17.🧺 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) a balloon (d) a few hours of waiting
18. 18.True or false: a flower stem does not let water climb. (a) True (b) False
19. 19.True or false: a flower stem lets water climb up it. (a) True (b) False
20. 20.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a battery cell (d) a few hours of waiting
22. 22.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a flower stem (d) a paper towel
26. 26.🔍 Which is the odd one out? (a) a strip of cloth (b) a steel spoon (c) a rubber eraser (d) a piece of foil
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a paper towel
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 kind of flower (b) the room it stands in (c) the length of the stem (d) the amount of water
30. 30.⚖️ 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
31. 31.True or false: a piece of foil does not let water climb. (a) True (b) False
32. 32.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
33. 33.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
34. 34.True or false: a steel spoon does not let water climb. (a) True (b) False
35. 35.🌼 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
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a sugar cube (d) a rubber eraser
37. 37.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a flower stem (d) a rubber eraser
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 length of the stem (b) the room it stands in (c) the amount of colour (d) time for colour to show
39. 39.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) capillary action (d) evaporation
40. 40.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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