Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 261 · 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 does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a plastic ruler (d) a paper towel
2. 2.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) yeast
5. 5.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.True or false: a paper towel does not let water climb. (a) True (b) False
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
9. 9.True or false: a piece of foil lets water climb up it. (a) False (b) True
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
12. 12.⚖️ 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 kind of flower (b) time for colour to show (c) the amount of water (d) the amount of colour
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
16. 16.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
18. 18.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a paper towel (d) a sugar cube
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a battery cell (d) a few hours of waiting
20. 20.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
22. 22.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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) True (b) False
24. 24.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a piece of foil
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a strip of cloth (d) a piece of foil
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
32. 32.⚖️ 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 room it stands in (c) the length of the stem (d) the amount of water
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a glass of water (d) a white flower
34. 34.🧺 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
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a glass of water (d) a white flower
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of chalk (c) a rubber eraser (d) a steel spoon
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed

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