Capillary Action Flower Experiment Worksheet

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

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