Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 507 · 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 not needed for the coloured flower experiment. (a) True (b) False
2. 2.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
3. 3.True or false: a flower stem lets water climb up it. (a) False (b) True
4. 4.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
5. 5.⚖️ 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) True (b) False
6. 6.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
10. 10.💧 Which of these does not let water climb? (a) a steel spoon (b) a sugar cube (c) a flower stem (d) a paper towel
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a white flower (d) food colour
12. 12.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a glass marble (d) a strip of cloth
13. 13.🔮 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
14. 14.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a glass of water (d) a few hours of waiting
16. 16.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) a magnet
18. 18.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) yeast (d) a glass of water
20. 20.🔮 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 fall off at once (d) they all turn green
21. 21.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
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 keep it the same (b) we change it (c) we measure it
23. 23.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
24. 24.True or false: a rubber eraser lets water climb up it. (a) True (b) False
25. 25.⚖️ 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 water
26. 26.⚖️ 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 room it stands in (c) the length of the stem (d) time for colour to show
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
28. 28.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a glass marble (d) a plastic ruler
30. 30.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a strip of cloth (d) a plastic ruler
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a battery cell (c) turmeric powder (d) a white flower
33. 33.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a glass marble (d) a piece of foil
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
35. 35.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
36. 36.⚖️ 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 room it stands in
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a few hours of waiting
38. 38.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
39. 39.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the amount of water
40. 40.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False

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