Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 520 · 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.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
5. 5.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
6. 6.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.True or false: a piece of chalk lets water climb up it. (a) False (b) True
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a mirror (d) food colour
10. 10.True or false: a piece of chalk does not let water climb. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a cotton thread (d) a sugar cube
12. 12.⚖️ 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
13. 13.True or false: a flower stem lets water climb up it. (a) True (b) False
14. 14.⚖️ 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) time for colour to show (d) the room it stands in
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a piece of foil (d) a piece of chalk
16. 16.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.⚖️ 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 water (b) the length of the stem (c) the amount of colour (d) time for colour to show
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a magnet (d) food colour
21. 21.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a glass marble (d) a rubber eraser
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a sugar cube (d) a paper towel
25. 25.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
26. 26.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) food colour
29. 29.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a paper towel (d) a rubber eraser
31. 31.⚖️ 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
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a mirror (c) a few hours of waiting (d) food colour
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a magnet
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a paper towel (d) a plastic ruler
37. 37.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
38. 38.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
39. 39.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
40. 40.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a piece of foil

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