Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 76 · 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 piece of foil (b) a steel spoon (c) a rubber eraser (d) a flower stem
2. 2.⚖️ 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
3. 3.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
4. 4.⚖️ 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
5. 5.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a balloon
8. 8.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a plastic ruler (d) a steel spoon
13. 13.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
14. 14.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) time for colour to show
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a balloon (d) turmeric powder
17. 17.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
19. 19.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a piece of chalk
20. 20.🧺 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 white flower (d) a glass of water
21. 21.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
22. 22.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
23. 23.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
25. 25.🧺 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
26. 26.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a paper towel
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🧺 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 battery cell (d) food colour
29. 29.True or false: food colour is not 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.True or false: a strip of cloth lets water climb up it. (a) False (b) True
32. 32.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
33. 33.True or false: a plastic ruler lets water climb up it. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a plastic ruler (d) a rubber eraser
35. 35.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
37. 37.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
39. 39.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show (d) the kind of flower
40. 40.True or false: a piece of foil lets water climb up it. (a) True (b) False

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