Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 540 · 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 plastic ruler lets water climb up it. (a) False (b) True
2. 2.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
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) yeast (d) a few hours of waiting
4. 4.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
5. 5.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.True or false: a strip of cloth lets water climb up it. (a) False (b) True
7. 7.True or false: a sugar cube does not let water climb. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a piece of chalk (b) a flower stem (c) a plastic ruler (d) a cotton thread
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) food colour (d) a white flower
10. 10.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
11. 11.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a piece of foil (d) a glass marble
12. 12.⚖️ 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 room it stands in (b) time for colour to show (c) the kind of flower (d) the amount of water
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a glass of water (d) a few hours of waiting
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) a balloon (d) a magnet
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.⚖️ 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 room it stands in (c) time for colour to show
17. 17.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.True or false: a paper towel does not let water climb. (a) False (b) True
19. 19.True or false: a steel spoon does not let water climb. (a) True (b) False
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a mirror (d) food colour
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a white flower
22. 22.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
23. 23.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a rubber eraser
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
25. 25.⚖️ 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 kept the same. (a) False (b) True
26. 26.True or false: a glass marble lets water climb up it. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
28. 28.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a pet (d) a grown-up
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
30. 30.True or false: a rubber eraser lets water climb up it. (a) True (b) False
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a balloon (d) food colour
35. 35.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 kind of flower (b) the length of the stem (c) the amount of water (d) the amount of colour
38. 38.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
39. 39.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
40. 40.⚖️ 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 what we measure. (a) True (b) False

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