Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 91 · 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? True or false: the length of the stem is the one thing we change. (a) False (b) True
2. 2.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a sugar cube (d) a plastic ruler
3. 3.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
4. 4.True or false: a flower stem does not let water climb. (a) True (b) False
5. 5.⚖️ 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
6. 6.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
8. 8.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
9. 9.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a balloon (d) a glass of water
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a white flower
13. 13.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
15. 15.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
16. 16.🧺 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) turmeric powder
17. 17.🔮 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 fall off at once (c) they stay white (d) they turn two colours
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a cotton thread (d) a piece of chalk
20. 20.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) food colour
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a glass of water (c) a few hours of waiting (d) food colour
24. 24.🔍 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
25. 25.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a cotton thread (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 of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a piece of foil (d) a strip of cloth
29. 29.True or false: a plastic ruler lets water climb up it. (a) True (b) False
30. 30.⚖️ 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 kind of flower (c) time for colour to show
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a mirror (d) a white flower
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) food colour
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
34. 34.🔍 Which is the odd one out? (a) a flower stem (b) a glass marble (c) a plastic ruler (d) a steel spoon
35. 35.⚖️ 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
36. 36.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) yeast
39. 39.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed

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