Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 582 · 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? True or false: the amount of water is the one thing we change. (a) True (b) False
2. 2.True or false: a piece of chalk does not let water climb. (a) False (b) True
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a magnet (c) yeast (d) a battery cell
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a glass of water (d) a white flower
5. 5.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
7. 7.True or false: a strip of cloth does not let water climb. (a) False (b) True
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
9. 9.💧 Which of these does not let water climb? (a) a glass marble (b) a paper towel (c) a strip of cloth (d) a flower stem
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a mirror (d) a white flower
11. 11.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a steel spoon (d) a rubber eraser
12. 12.⚖️ 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 the one thing we change. (a) False (b) True
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
14. 14.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
15. 15.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
16. 16.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
21. 21.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a paper towel (d) a strip of cloth
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
23. 23.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a strip of cloth (c) a plastic ruler (d) a steel spoon
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a white flower (d) a few hours of waiting
28. 28.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a rubber eraser (b) a sugar cube (c) a plastic ruler (d) a piece of foil
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) yeast (d) a few hours of waiting
31. 31.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) the stem is hot (d) petals are magnetic
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
34. 34.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a sugar cube (d) a plastic ruler
35. 35.True or false: a plastic ruler lets water climb up it. (a) True (b) False
36. 36.🔮 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 turn two colours (d) they fall off at once
37. 37.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
38. 38.⚖️ 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) time for colour to show (c) the room it stands in (d) the length of the stem
39. 39.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
40. 40.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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