Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 279 · 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.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) food colour
3. 3.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) turmeric powder
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
6. 6.🧺 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) food colour (d) a battery cell
7. 7.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
8. 8.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
10. 10.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
11. 11.💧 Which of these does not let water climb? (a) a piece of foil (b) a flower stem (c) a cotton thread (d) a sugar cube
12. 12.True or false: a rubber eraser does not let water climb. (a) False (b) True
13. 13.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a steel spoon (d) a piece of chalk
14. 14.⚖️ 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
15. 15.⚖️ 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 length of the stem (d) the amount of colour
16. 16.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
17. 17.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a strip of cloth (d) a piece of foil
19. 19.🧺 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 mirror (d) food colour
20. 20.⚖️ 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 measure it (c) we keep it the same
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) yeast (c) a white flower (d) a few hours of waiting
24. 24.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
25. 25.🛟 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
26. 26.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they stay white (d) they fall off at once
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a few hours of waiting (c) a mirror (d) a battery cell
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
32. 32.True or false: a paper towel lets water climb up it. (a) True (b) False
33. 33.True or false: a plastic ruler does not let water climb. (a) False (b) True
34. 34.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a flower stem
35. 35.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
36. 36.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a battery cell
39. 39.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting

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