Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 94 · 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.⚖️ 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 kind of flower (c) the amount of water (d) the length of the stem
2. 2.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
3. 3.🛟 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
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the kind of flower (d) the length of the stem
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a magnet (d) a few hours of waiting
7. 7.⚖️ 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
8. 8.True or false: a piece of chalk does not let water climb. (a) False (b) True
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a piece of chalk (d) a sugar cube
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) turmeric powder (d) a few hours of waiting
12. 12.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
13. 13.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they stay white (d) they all turn green
15. 15.🧺 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 magnet (d) food colour
16. 16.⚖️ 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
17. 17.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
19. 19.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a cotton thread (d) a strip of cloth
21. 21.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
22. 22.⚖️ 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 amount of colour
23. 23.🔍 Which is the odd one out? (a) a sugar cube (b) a piece of chalk (c) a cotton thread (d) a steel spoon
24. 24.⚖️ 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
25. 25.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
26. 26.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) magnetism (d) melting
28. 28.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
31. 31.⚖️ 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) False (b) True
32. 32.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a piece of chalk (d) a cotton thread
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a white flower (d) a battery cell
34. 34.💧 Which of these lets water climb up it? (a) a paper towel (b) a steel spoon (c) a plastic ruler (d) a piece of foil
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a cotton thread
37. 37.True or false: a strip of cloth lets water climb up it. (a) False (b) True
38. 38.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a flower stem (c) a piece of foil (d) a glass marble

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