Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 90 · 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.⚖️ 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) the amount of colour (c) time for colour to show
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
3. 3.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a piece of foil
4. 4.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
5. 5.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a strip of cloth (d) a piece of foil
6. 6.⚖️ 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 amount of colour (b) the kind of flower (c) time for colour to show (d) the length of the stem
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
8. 8.True or false: a cotton thread does not let water climb. (a) True (b) False
9. 9.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
10. 10.🧺 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 white flower
11. 11.🔍 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
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of chalk (d) a rubber eraser
15. 15.⚖️ 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) True (b) False
16. 16.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
18. 18.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Which of these does not let water climb? (a) a plastic ruler (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.⚖️ 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
24. 24.🧺 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 balloon (d) a glass of water
25. 25.🧺 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 magnet (d) a white flower
26. 26.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
27. 27.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a paper towel
30. 30.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a cotton thread
32. 32.⚖️ 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) True (b) False
33. 33.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
34. 34.True or false: a paper towel lets water climb up it. (a) False (b) True
35. 35.True or false: a glass marble does not let water climb. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a strip of cloth (d) a glass marble
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a balloon (d) a white flower
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
39. 39.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a paper towel
40. 40.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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