Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 621 · 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 of these is needed for the coloured flower experiment? (a) a balloon (b) a mirror (c) a white flower (d) a magnet
2. 2.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
3. 3.True or false: a paper towel lets water climb up it. (a) False (b) True
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
5. 5.True or false: a sugar cube lets water climb up it. (a) True (b) False
6. 6.💧 Which of these lets water climb up it? (a) a glass marble (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
7. 7.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
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 climbs up it (b) water does not climb
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) food colour
11. 11.🔍 Which is the odd one out? (a) a flower stem (b) a rubber eraser (c) a piece of chalk (d) a strip of cloth
12. 12.True or false: a steel spoon lets water climb up it. (a) False (b) True
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) turmeric powder
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
16. 16.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
17. 17.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
18. 18.🔮 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 turn two colours (c) they all turn green (d) they stay white
19. 19.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a piece of foil
20. 20.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
21. 21.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
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 measure it (c) we change it
23. 23.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
24. 24.⚖️ 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
25. 25.True or false: a piece of foil does not let water climb. (a) True (b) False
26. 26.True or false: a piece of chalk lets water climb up it. (a) False (b) True
27. 27.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the flower glows (d) the stem turns blue
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 what we measure. (a) True (b) False
29. 29.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: a glass marble lets water climb up it. (a) False (b) True
31. 31.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a few hours of waiting (d) a glass of water
33. 33.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
34. 34.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a flower stem (d) a piece of chalk
35. 35.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
38. 38.True or false: a plastic ruler does not let water climb. (a) True (b) False
39. 39.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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