Capillary Action Flower Experiment Worksheet

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

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