Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 595 · 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 lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a steel spoon (d) a cotton thread
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a glass of water (d) food colour
3. 3.🔮 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
4. 4.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
5. 5.⚖️ 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) True (b) False
6. 6.⚖️ 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
7. 7.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a paper towel (d) a steel spoon
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) turmeric powder (d) a few hours of waiting
9. 9.🔍 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
10. 10.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a flower stem (c) a plastic ruler (d) a piece of foil
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
13. 13.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a glass of water (d) a few hours of waiting
15. 15.⚖️ 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 length of the stem (c) time for colour to show (d) the amount of water
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
18. 18.True or false: a paper towel does not let water climb. (a) False (b) True
19. 19.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
21. 21.⚖️ 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 what we measure. (a) True (b) False
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
23. 23.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.True or false: a rubber eraser lets water climb up it. (a) False (b) True
25. 25.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
26. 26.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a sugar cube (d) a steel spoon
27. 27.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a flower stem (d) a plastic ruler
29. 29.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
30. 30.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a battery cell (d) turmeric powder
32. 32.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a flower stem (d) a paper towel
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
34. 34.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of water
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) food colour (d) a white flower
36. 36.True or false: a plastic ruler lets water climb up it. (a) False (b) True
37. 37.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
38. 38.True or false: a sugar cube does not let water climb. (a) False (b) True
39. 39.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
40. 40.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a glass marble

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