Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 480 · 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 glass of water is needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ 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 kind of flower (d) the length of the stem
3. 3.True or false: a steel spoon does not let water climb. (a) False (b) True
4. 4.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
6. 6.True or false: a sugar cube lets water climb up it. (a) True (b) False
7. 7.⚖️ 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 amount of water (b) the kind of flower (c) the length of the stem (d) time for colour to show
8. 8.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a paper towel (d) a flower stem
9. 9.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
10. 10.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
11. 11.⚖️ 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
12. 12.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) food colour
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
15. 15.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
17. 17.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
18. 18.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a steel spoon
19. 19.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a paper towel (d) a glass marble
21. 21.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a strip of cloth (c) a piece of foil (d) a rubber eraser
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
23. 23.⚖️ 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 kept the same. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Do we need a glass of water 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 amount of water”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.True or false: a piece of chalk does not let water climb. (a) False (b) True
28. 28.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals are magnetic (c) petals like colour (d) petals lose water to air
29. 29.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a rubber eraser (d) a piece of chalk
31. 31.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
32. 32.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.🔍 Which is the odd one out? (a) a rubber eraser (b) a strip of cloth (c) a steel spoon (d) a piece of foil
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
37. 37.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.⚖️ 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 measure it (c) we change it
39. 39.True or false: a steel spoon lets water climb up it. (a) True (b) False
40. 40.💧 Which of these lets water climb up it? (a) a paper towel (b) a glass marble (c) a rubber eraser (d) a steel spoon

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