Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 477 · 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) anyone, without looking (c) a grown-up (d) a toddler
2. 2.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a plastic ruler (d) a sugar cube
3. 3.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a flower stem (d) a steel spoon
6. 6.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a glass marble (d) a paper towel
7. 7.⚖️ 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) the amount of water
8. 8.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 the one thing we change. (a) True (b) False
11. 11.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
12. 12.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
14. 14.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
15. 15.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a few hours of waiting
17. 17.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
21. 21.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a paper towel (d) a cotton thread
22. 22.💧 Which of these lets water climb up it? (a) a flower stem (b) a plastic ruler (c) a rubber eraser (d) a glass marble
23. 23.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) a glass of water (d) food colour
25. 25.True or false: a piece of foil lets water climb up it. (a) True (b) False
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a white flower (d) a glass of water
27. 27.🧺 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) a glass of water (d) turmeric powder
28. 28.⚖️ 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) True (b) False
29. 29.⚖️ 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 change it (c) we measure it
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
31. 31.True or false: a paper towel does not let water climb. (a) True (b) False
32. 32.🔮 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 stay white (c) they fall off at once (d) they all turn green
33. 33.True or false: a paper towel 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 flower floats away (b) the stem turns to ice (c) the water turns green (d) the petals turn bluish
35. 35.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of chalk (c) a rubber eraser (d) a flower stem
36. 36.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a glass marble (d) a strip of cloth
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) turmeric powder (d) a white flower
39. 39.🔮 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
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) a magnet (d) a few hours of waiting

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