Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 572 · 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.⚖️ 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
2. 2.⚖️ 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 change it (c) we keep it the same
3. 3.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
4. 4.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
5. 5.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
6. 6.True or false: a plastic ruler lets water climb up it. (a) True (b) False
7. 7.True or false: a paper towel does not let water climb. (a) False (b) True
8. 8.True or false: a plastic ruler does not let water climb. (a) False (b) True
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.True or false: a steel spoon lets water climb up it. (a) False (b) True
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a mirror (d) a glass of water
12. 12.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
13. 13.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
14. 14.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) a mirror
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the kind of flower (c) the room it stands in (d) the amount of water
18. 18.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🔮 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 fall off at once (d) they turn two colours
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a glass of water
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
22. 22.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a steel spoon (d) a glass marble
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
24. 24.💧 Which of these lets water climb up it? (a) a piece of foil (b) a steel spoon (c) a paper towel (d) a glass marble
25. 25.⚖️ 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
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 few hours of waiting (d) a glass of water
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a mirror (d) a battery cell
28. 28.⚖️ 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 length of the stem (b) the amount of water (c) time for colour to show
29. 29.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of chalk (c) a plastic ruler (d) a piece of foil
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.💧 Which of these does not let water climb? (a) a glass marble (b) a cotton thread (c) a paper towel (d) a flower stem
32. 32.🌼 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
33. 33.True or false: a cotton thread lets water climb up it. (a) True (b) False
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a white flower (d) a mirror
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a battery cell (d) a glass of water
38. 38.⚖️ 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
39. 39.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a balloon

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