Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 947 · 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 yeast for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
3. 3.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
4. 4.True or false: a piece of foil lets water climb up it. (a) True (b) False
5. 5.⚖️ 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 change it (b) we measure it (c) we keep it the same
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a few hours of waiting (d) a white flower
7. 7.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a piece of foil (d) a plastic ruler
8. 8.🔍 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 water turns green (d) the flower floats away
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) turmeric powder
10. 10.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) wipe them on walls
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 amount of colour (b) the amount of water (c) time for colour to show (d) the length of the stem
12. 12.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a piece of foil (d) a flower stem
17. 17.True or false: a piece of chalk does not let water climb. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a sugar cube (b) a glass marble (c) a rubber eraser (d) a piece of foil
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a few hours of waiting (d) a balloon
20. 20.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🔍 Which is the odd one out? (a) a plastic ruler (b) a steel spoon (c) a paper towel (d) a rubber eraser
22. 22.⚖️ 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 the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a magnet (d) a glass of water
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
25. 25.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) a strip of cloth (b) a piece of chalk (c) a piece of foil (d) a flower stem
27. 27.True or false: a rubber eraser lets water climb up it. (a) False (b) True
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) food colour
29. 29.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water
31. 31.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
32. 32.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
33. 33.True or false: a flower stem does not let water climb. (a) False (b) True
34. 34.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.🌼 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
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
39. 39.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a piece of chalk (d) a rubber eraser
40. 40.True or false: a cotton thread does not let water climb. (a) True (b) False

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