Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 421 · 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 water is kept the same. (a) False (b) True
2. 2.⚖️ 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 the one thing we change. (a) False (b) True
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) a white flower (d) a glass of water
4. 4.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
5. 5.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
6. 6.⚖️ 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
7. 7.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals are magnetic (d) petals like colour
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) turmeric powder
9. 9.🔍 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
10. 10.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a balloon (d) food colour
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a few hours of waiting (d) a white flower
13. 13.True or false: a flower stem does not let water climb. (a) True (b) False
14. 14.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
15. 15.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a piece of chalk
16. 16.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
17. 17.⚖️ 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 amount of water (b) the room it stands in (c) the amount of colour (d) the length of the stem
18. 18.💧 Which of these does not let water climb? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a paper towel
19. 19.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
20. 20.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) rub your eyes (d) lick your fingers
21. 21.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a flower stem (d) a plastic ruler
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (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: the room it stands in is what we measure. (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 amount of colour (c) the length of the stem (d) time for colour to show
25. 25.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
26. 26.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) food colour (d) a battery cell
29. 29.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
31. 31.🧺 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 mirror
32. 32.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
33. 33.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
34. 34.True or false: a steel spoon lets water climb up it. (a) True (b) False
35. 35.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
36. 36.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a piece of foil
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.⚖️ 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 the one thing we change. (a) False (b) True

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