Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 905 · 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 piece of foil lets water climb up it. (a) False (b) True
2. 2.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
3. 3.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 water”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a balloon (c) a mirror (d) a glass of water
7. 7.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a strip of cloth (d) a plastic ruler
8. 8.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
9. 9.⚖️ 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) time for colour to show (c) the kind of flower (d) the room it stands in
10. 10.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a sugar cube (d) a glass marble
11. 11.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
12. 12.⚖️ 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
13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they turn two colours (d) they fall off at once
14. 14.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a mirror (d) food colour
17. 17.True or false: a plastic ruler does not let water climb. (a) True (b) False
18. 18.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
19. 19.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
20. 20.⚖️ 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
21. 21.⚖️ 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 the one thing we change. (a) True (b) False
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a white flower (d) a few hours of waiting
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
24. 24.⚖️ 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) time for colour to show (d) the kind of flower
25. 25.True or false: a flower stem does not let water climb. (a) True (b) False
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a white flower (d) food colour
27. 27.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
28. 28.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a piece of foil (d) a glass marble
29. 29.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a few hours of waiting (d) a magnet
32. 32.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
33. 33.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through tiny stem tubes (d) through the air
34. 34.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a plastic ruler (d) a piece of chalk
37. 37.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
38. 38.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
39. 39.🔮 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
40. 40.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed

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