Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 126 · 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 balloon is not needed for the coloured flower experiment. (a) False (b) True
2. 2.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🔮 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
4. 4.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
5. 5.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a few hours of waiting (d) turmeric powder
8. 8.🧺 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) food colour (d) turmeric powder
9. 9.⚖️ 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
10. 10.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a paper towel (d) a piece of chalk
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) a battery cell (d) food colour
13. 13.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) food colour (d) a white flower
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) food colour (d) a white flower
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a battery cell (d) a glass of water
16. 16.True or false: a piece of chalk does not let water climb. (a) True (b) False
17. 17.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
18. 18.⚖️ 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 length of the stem (c) the kind of flower
19. 19.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
20. 20.True or false: a piece of foil does not let water climb. (a) True (b) False
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
22. 22.True or false: a strip of cloth lets water climb up it. (a) True (b) False
23. 23.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
24. 24.🧺 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
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 amount of water (b) the amount of colour (c) the kind of flower (d) time for colour to show
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a strip of cloth
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a white flower (d) a few hours of waiting
30. 30.⚖️ 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 colour (c) the amount of water (d) the length of the stem
31. 31.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
32. 32.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a glass marble (d) a piece of foil
33. 33.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a piece of foil (d) a piece of chalk
34. 34.True or false: a paper towel does not let water climb. (a) False (b) True
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
36. 36.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a glass marble (d) a piece of chalk
37. 37.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
38. 38.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
39. 39.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a paper towel (d) a rubber eraser
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed

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