Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 532 · 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 is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a balloon (d) a few hours of waiting
2. 2.True or false: a sugar cube does not let water climb. (a) False (b) True
3. 3.⚖️ 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
4. 4.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
5. 5.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
6. 6.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
7. 7.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a strip of cloth (d) a rubber eraser
8. 8.⚖️ 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
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
10. 10.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
11. 11.🔮 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
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the petals turn bluish (d) the water turns green
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
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 room it stands in
15. 15.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a steel spoon (c) a rubber eraser (d) a piece of foil
16. 16.🔍 Which is the odd one out? (a) a piece of foil (b) a sugar cube (c) a rubber eraser (d) a glass marble
17. 17.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
18. 18.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) a few hours of waiting
21. 21.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
23. 23.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a flower stem (d) a sugar cube
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
26. 26.⚖️ 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 kind of flower (b) the length of the stem (c) the amount of colour (d) the amount of water
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (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 white flower (b) a glass of water (c) a balloon (d) food colour
29. 29.True or false: a steel spoon lets water climb up it. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a plastic ruler (d) a flower stem
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
32. 32.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
33. 33.🧺 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 glass of water (d) turmeric powder
34. 34.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
35. 35.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
36. 36.True or false: a piece of foil lets water climb up it. (a) True (b) False
37. 37.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.True or false: a piece of chalk does not let water climb. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a cotton thread (b) a strip of cloth (c) a sugar cube (d) a glass marble

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