Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 484 · 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 mirror is needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a magnet (d) a few hours of waiting
4. 4.⚖️ 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 length of the stem (b) the amount of colour (c) the amount of water (d) time for colour to show
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a few hours of waiting (c) food colour (d) a glass of water
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) food colour (c) a mirror (d) a balloon
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
8. 8.True or false: a cotton thread lets water climb up it. (a) True (b) False
9. 9.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
10. 10.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
13. 13.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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) the room it stands in (b) the length of the stem (c) time for colour to show
15. 15.⚖️ 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) True (b) False
16. 16.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a sugar cube (d) a plastic ruler
17. 17.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
18. 18.True or false: a glass marble does not let water climb. (a) True (b) False
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
20. 20.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
21. 21.🔮 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 stay white (c) they all turn green (d) they turn two colours
22. 22.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a rubber eraser
23. 23.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.True or false: a steel spoon lets water climb up it. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a rubber eraser (d) a cotton thread
27. 27.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a plastic ruler (d) a glass marble
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) food colour (d) a glass of water
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a mirror (d) a white flower
33. 33.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a piece of chalk (d) a glass marble
36. 36.💧 Which of these lets water climb up it? (a) a cotton thread (b) a glass marble (c) a plastic ruler (d) a steel spoon
37. 37.⚖️ 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 kind of flower (d) the length of the stem
38. 38.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a glass marble
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) yeast (d) a few hours of waiting
40. 40.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a piece of foil (d) a steel spoon

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