Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 828 · 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 would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
2. 2.⚖️ 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
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.True or false: a plastic ruler does not let water climb. (a) True (b) False
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) a battery cell (d) a glass of water
7. 7.True or false: a glass marble lets water climb up it. (a) True (b) False
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a sugar cube (d) a flower stem
11. 11.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a steel spoon (d) a glass marble
13. 13.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) magnetism (c) evaporation (d) capillary action
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a rubber eraser (d) a plastic ruler
18. 18.True or false: a paper towel does not let water climb. (a) True (b) False
19. 19.💧 Dip a piece of foil 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 steel spoon (b) a rubber eraser (c) a piece of foil (d) a sugar cube
21. 21.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a glass marble (d) a plastic ruler
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
23. 23.🔍 Which is the odd one out? (a) a piece of foil (b) a flower stem (c) a rubber eraser (d) a steel spoon
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
25. 25.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a flower stem
26. 26.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.⚖️ 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 amount of water (b) the room it stands in (c) the amount of colour (d) the length of the stem
28. 28.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a balloon
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a mirror (d) food colour
31. 31.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
32. 32.🛟 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
33. 33.🌼 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
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) a balloon
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a glass marble (d) a steel spoon
37. 37.True or false: a flower stem does not let water climb. (a) True (b) False
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a paper towel
40. 40.⚖️ 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

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