Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 888 · 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.🧺 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 battery cell (d) food colour
2. 2.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
3. 3.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a flower stem
4. 4.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 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 white flower (d) a mirror
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) food colour (d) a balloon
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
9. 9.⚖️ 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 amount of colour (c) time for colour to show (d) the room it stands in
10. 10.⚖️ 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 room it stands in (b) the amount of colour (c) the kind of flower (d) the length of the stem
11. 11.🔮 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 stay white (c) they all turn green (d) they fall off at once
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a few hours of waiting (d) turmeric powder
13. 13.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a piece of chalk
14. 14.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
17. 17.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
18. 18.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a flower stem (d) a sugar cube
19. 19.🧺 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 glass of water (d) a magnet
20. 20.🛟 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
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) food colour (d) a white flower
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a sugar cube
24. 24.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a cotton thread
25. 25.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a plastic ruler (d) a cotton thread
27. 27.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ 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) True (b) False
30. 30.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
31. 31.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
32. 32.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a glass of water
34. 34.True or false: a sugar cube does not let water climb. (a) True (b) False
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
36. 36.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) food colour (d) a white flower
38. 38.💧 Which of these lets water climb up it? (a) a glass marble (b) a steel spoon (c) a plastic ruler (d) a strip of cloth
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed

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