Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 274 · 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 glass of water is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a battery cell (d) a glass of water
4. 4.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a flower stem (d) a cotton thread
5. 5.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
6. 6.True or false: a mirror is not needed for the coloured flower experiment. (a) True (b) False
7. 7.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
8. 8.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) the petals turn red (d) no colour change
9. 9.True or false: a cotton thread does not let water climb. (a) False (b) True
10. 10.💧 Dip a piece of foil 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 rubber eraser does not let water climb. (a) False (b) True
12. 12.⚖️ 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) time for colour to show (c) the amount of water (d) the length of the stem
13. 13.🔮 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
14. 14.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
15. 15.⚖️ 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 room it stands in (c) time for colour to show (d) the amount of colour
16. 16.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a plastic ruler does not let water climb. (a) True (b) False
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
19. 19.🔍 Which is the odd one out? (a) a flower stem (b) a strip of cloth (c) a sugar cube (d) a plastic ruler
20. 20.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) a white flower
21. 21.💧 Which of these does not let water climb? (a) a piece of foil (b) a flower stem (c) a cotton thread (d) a piece of chalk
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
23. 23.🧺 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) a glass of water (d) a white flower
24. 24.🧺 Do we need a glass of water 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? What do we do with “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a few hours of waiting (d) a battery cell
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a flower stem (d) a piece of foil
29. 29.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a flower stem (d) a paper towel
30. 30.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
31. 31.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
32. 32.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a glass marble (d) a piece of foil
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) a white flower
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
36. 36.🧺 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 glass of water (d) a mirror
37. 37.⚖️ 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
38. 38.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
39. 39.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
40. 40.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a cotton thread (d) a paper towel

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