Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 964 · 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.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
2. 2.🔍 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 flower floats away (d) the petals turn bluish
3. 3.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
4. 4.🔍 Which is the odd one out? (a) a strip of cloth (b) a cotton thread (c) a plastic ruler (d) a sugar cube
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) food colour (d) a glass of water
6. 6.⚖️ 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
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.True or false: a glass marble does not let water climb. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a paper towel (d) a cotton thread
11. 11.🔮 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 turn two colours (c) they fall off at once (d) they all turn green
12. 12.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
13. 13.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) rub your eyes (d) wash your hands
14. 14.⚖️ 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 kind of flower
15. 15.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
16. 16.⚖️ 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
17. 17.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a piece of chalk (d) a piece of foil
18. 18.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a cotton thread
19. 19.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 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 few hours of waiting (d) a white flower
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a balloon
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) yeast (d) a glass of water
23. 23.True or false: a piece of chalk lets water climb up it. (a) False (b) True
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
25. 25.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
26. 26.True or false: a cotton thread lets water climb up it. (a) True (b) False
27. 27.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
28. 28.💧 Which of these does not let water climb? (a) a steel spoon (b) a cotton thread (c) a sugar cube (d) a paper towel
29. 29.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a plastic ruler (d) a sugar cube
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a paper towel
32. 32.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.True or false: a piece of chalk does not let water climb. (a) False (b) True
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a magnet (d) a battery cell
38. 38.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a plastic ruler (d) a glass marble
39. 39.⚖️ 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 amount of colour (c) time for colour to show (d) the room it stands in
40. 40.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True

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