Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 872 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) a glass of water (d) food colour
2. 2.🔮 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 turn two colours (c) they all turn green (d) they fall off at once
3. 3.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) yeast (c) food colour (d) a few hours of waiting
5. 5.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) food colour (d) a balloon
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a magnet (d) a white flower
7. 7.🌼 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) turmeric powder
9. 9.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
10. 10.⚖️ 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 keep it the same (b) we measure it (c) we change it
11. 11.True or false: a plastic ruler lets water climb up it. (a) True (b) False
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 length of the stem (b) the kind of flower (c) the amount of water (d) the room it stands in
13. 13.🛟 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
14. 14.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
15. 15.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
17. 17.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
18. 18.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) False (b) True
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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 room it stands in (b) the amount of water (c) time for colour to show (d) the kind of flower
22. 22.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
23. 23.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
24. 24.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
25. 25.True or false: a piece of chalk does not let water climb. (a) True (b) False
26. 26.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
27. 27.💧 Which of these does not let water climb? (a) a sugar cube (b) a plastic ruler (c) a piece of chalk (d) a paper towel
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a magnet (d) a glass of water
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a rubber eraser
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) food colour
31. 31.True or false: a piece of foil does not let water climb. (a) False (b) True
32. 32.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
33. 33.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a few hours of waiting (c) turmeric powder (d) a magnet
35. 35.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
36. 36.True or false: a rubber eraser lets water climb up it. (a) True (b) False
37. 37.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a white flower (d) a few hours of waiting
39. 39.⚖️ 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) True (b) False
40. 40.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False

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