Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 627 · 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.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a sugar cube (d) a flower stem
4. 4.🔍 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
5. 5.🧺 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) a few hours of waiting
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 kind of flower (b) the amount of colour (c) the length of the stem (d) the room it stands in
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: a glass marble lets water climb up it. (a) True (b) False
9. 9.⚖️ 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) time for colour to show (c) the amount of water
10. 10.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
11. 11.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a paper towel
12. 12.True or false: a piece of chalk does not let water climb. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a sugar cube
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 change it (b) we measure it (c) we keep it the same
15. 15.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
16. 16.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
17. 17.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a piece of foil
18. 18.🔮 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
19. 19.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) no colour change (d) the flower glows
20. 20.⚖️ 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
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) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a white flower (d) a magnet
25. 25.True or false: a paper towel lets water climb up it. (a) True (b) False
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a few hours of waiting (d) a white flower
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) True (b) False
29. 29.True or false: a piece of foil 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? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🔮 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 fall off at once (c) they turn two colours (d) they all turn green
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
33. 33.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a flower stem (d) a strip of cloth
34. 34.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a sugar cube (d) a strip of cloth
35. 35.True or false: a glass marble does not let water climb. (a) True (b) False
36. 36.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
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.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
40. 40.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed

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