Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 191 · 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.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a plastic ruler (d) a glass marble
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 length of the stem (b) the room it stands in (c) the kind of flower (d) time for colour to show
3. 3.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
4. 4.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
5. 5.True or false: a rubber eraser lets water climb up it. (a) False (b) True
6. 6.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a glass marble (d) a paper towel
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a few hours of waiting
10. 10.⚖️ 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) True (b) False
11. 11.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
13. 13.💧 Dip a paper towel 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 glass marble does not let water climb. (a) False (b) True
15. 15.🌼 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
16. 16.🔮 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 all turn green (c) they turn two colours (d) they fall off at once
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a magnet
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a balloon
20. 20.⚖️ 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
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
23. 23.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a glass marble (d) a cotton thread
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) food colour
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) yeast (d) a glass of water
26. 26.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
27. 27.⚖️ 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
28. 28.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a white flower (c) a few hours of waiting (d) a glass of water
30. 30.True or false: a sugar cube lets water climb up it. (a) False (b) True
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
32. 32.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
33. 33.True or false: a piece of foil lets water climb up it. (a) False (b) True
34. 34.🔍 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
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) turmeric powder (d) a mirror
37. 37.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a magnet (d) a white flower
39. 39.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed

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