Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 795 · 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.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) anyone, without looking (d) a pet
2. 2.True or false: a plastic ruler lets water climb up it. (a) True (b) False
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) food colour (d) a white flower
4. 4.⚖️ 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
5. 5.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.💧 Which of these lets water climb up it? (a) a paper towel (b) a steel spoon (c) a plastic ruler (d) a rubber eraser
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
10. 10.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a balloon (d) a white flower
12. 12.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) a mirror (d) food colour
15. 15.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which of these does not let water climb? (a) a paper towel (b) a strip of cloth (c) a sugar cube (d) a steel spoon
17. 17.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
18. 18.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
19. 19.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
20. 20.⚖️ 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 room it stands in (b) the amount of water (c) the length of the stem (d) time for colour to show
21. 21.🔍 Which is the odd one out? (a) a sugar cube (b) a strip of cloth (c) a piece of foil (d) a cotton thread
22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a paper towel (d) a piece of foil
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) turmeric powder (d) a battery cell
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a cotton thread
26. 26.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a piece of chalk
27. 27.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a plastic ruler (c) a piece of foil (d) a steel spoon
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) True (b) False
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
30. 30.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
31. 31.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
32. 32.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
34. 34.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
35. 35.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) turmeric powder (c) yeast (d) a few hours of waiting
36. 36.True or false: a glass marble does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a glass marble (d) a piece of foil
38. 38.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a plastic ruler (d) a rubber eraser
39. 39.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
40. 40.⚖️ 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 colour (b) time for colour to show (c) the length of the stem (d) the amount of water

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