Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 496 · 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.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
2. 2.⚖️ 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
3. 3.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a piece of chalk (d) a cotton thread
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) food colour (d) a white flower
9. 9.True or false: a paper towel lets water climb up it. (a) True (b) False
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ 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 room it stands in (d) the amount of water
14. 14.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
16. 16.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
18. 18.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
19. 19.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 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) a white flower (d) yeast
21. 21.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
25. 25.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a paper towel (d) a plastic ruler
26. 26.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a sugar cube (d) a plastic ruler
27. 27.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
28. 28.True or false: a paper towel does not let water climb. (a) True (b) False
29. 29.True or false: a piece of chalk does not let water climb. (a) True (b) False
30. 30.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
31. 31.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a glass marble (d) a piece of foil
32. 32.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a magnet (d) yeast
34. 34.⚖️ 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
35. 35.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
36. 36.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
39. 39.True or false: a sugar cube does not let water climb. (a) True (b) False
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) turmeric powder (d) food colour

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