Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 856 · 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) yeast (b) a mirror (c) food colour (d) a magnet
2. 2.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
3. 3.True or false: a rubber eraser lets water climb up it. (a) True (b) False
4. 4.⚖️ 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) False (b) True
5. 5.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
6. 6.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 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) turmeric powder (d) a few hours of waiting
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.⚖️ 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 kind of flower (c) the amount of water (d) the length of the stem
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a piece of chalk (d) a rubber eraser
13. 13.True or false: a paper towel does not let water climb. (a) False (b) True
14. 14.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
15. 15.⚖️ 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 change it (c) we keep it the same
16. 16.True or false: a cotton thread lets water climb up it. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a sugar cube (d) a glass marble
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a mirror (c) a balloon (d) a white flower
19. 19.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.⚖️ 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 the one thing we change. (a) True (b) False
23. 23.⚖️ 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
24. 24.True or false: a cotton thread does not let water climb. (a) False (b) True
25. 25.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
28. 28.⚖️ 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
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.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
32. 32.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a white flower
34. 34.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
35. 35.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a sugar cube (d) a steel spoon
36. 36.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the stem turns to ice (d) the flower floats away
37. 37.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a paper towel
40. 40.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False

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