Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 429 · 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.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
4. 4.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
6. 6.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a plastic ruler (d) a piece of foil
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a sugar cube (d) a rubber eraser
8. 8.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
9. 9.True or false: a paper towel does not let water climb. (a) False (b) True
10. 10.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
11. 11.⚖️ 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) time for colour to show (c) the kind of flower (d) the amount of colour
12. 12.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) a white flower (d) a magnet
14. 14.⚖️ 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
15. 15.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 kept the same. (a) True (b) False
17. 17.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) the stem is hot (d) petals lose water to air
18. 18.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a strip of cloth (d) a sugar cube
19. 19.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
21. 21.⚖️ 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
22. 22.True or false: a sugar cube lets water climb up it. (a) False (b) True
23. 23.⚖️ 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) time for colour to show (b) the amount of colour (c) the length of the stem (d) the kind of flower
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a glass of water
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a balloon (d) a few hours of waiting
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) yeast (d) food colour
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a mirror (d) a few hours of waiting
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a balloon
29. 29.⚖️ 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
30. 30.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a rubber eraser (d) a sugar cube
32. 32.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a plastic ruler (d) a glass marble
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
36. 36.⚖️ 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 keep it the same (c) we change it
37. 37.True or false: a piece of chalk lets water climb up it. (a) False (b) True
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) a white flower
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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