Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 381 · 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.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) food colour (d) a few hours of waiting
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a magnet (d) a white flower
9. 9.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
10. 10.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
11. 11.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a rubber eraser (d) a piece of foil
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.True or false: a plastic ruler does not let water climb. (a) True (b) False
15. 15.⚖️ 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) the amount of water (c) time for colour to show
16. 16.True or false: a piece of chalk does not let water climb. (a) False (b) True
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a balloon
20. 20.True or false: a sugar cube lets water climb up it. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a glass of water (d) a few hours of waiting
22. 22.⚖️ 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 measure it (c) we keep it the same
23. 23.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
24. 24.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
25. 25.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of foil (d) a paper towel
26. 26.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they stay white (c) they turn two colours (d) they all turn green
27. 27.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
28. 28.True or false: a cotton thread does not let water climb. (a) True (b) False
29. 29.⚖️ 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 length of the stem (c) time for colour to show (d) the kind of flower
30. 30.⚖️ 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 what we measure. (a) False (b) True
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a magnet
32. 32.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a paper towel
33. 33.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a piece of chalk
34. 34.⚖️ 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 length of the stem (d) the amount of water
35. 35.💧 Which of these does not let water climb? (a) a piece of chalk (b) a rubber eraser (c) a cotton thread (d) a strip of cloth
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) yeast (d) a few hours of waiting
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a mirror (d) a white flower
38. 38.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.True or false: a piece of foil does not let water climb. (a) True (b) False
40. 40.True or false: a piece of foil lets water climb up it. (a) True (b) False

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