Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 674 · 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) yeast (b) a few hours of waiting (c) a glass of water (d) food colour
2. 2.🔮 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 fall off at once (d) they turn two colours
3. 3.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
4. 4.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a steel spoon (d) a sugar cube
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) a mirror (d) a battery cell
8. 8.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
9. 9.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ 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) time for colour to show (c) the kind of flower
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a sugar cube (d) a glass marble
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a cotton thread (d) a rubber eraser
14. 14.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a piece of chalk (d) a strip of cloth
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) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) turmeric powder
19. 19.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
20. 20.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
21. 21.True or false: a cotton thread does not let water climb. (a) True (b) False
22. 22.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
26. 26.⚖️ 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) the kind of flower (c) the amount of water (d) time for colour to show
27. 27.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) turmeric powder (d) a battery cell
29. 29.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) turmeric powder (d) food colour
33. 33.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
34. 34.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a grown-up (d) a pet
35. 35.⚖️ 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
36. 36.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
37. 37.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
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 the one thing we change. (a) True (b) False
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
40. 40.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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