Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 961 · 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 few hours of waiting (b) a white flower (c) a glass of water (d) a magnet
2. 2.💧 Which of these does not let water climb? (a) a piece of chalk (b) a rubber eraser (c) a sugar cube (d) a flower stem
3. 3.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
5. 5.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a piece of chalk (d) a steel spoon
6. 6.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a mirror (c) a battery cell (d) a glass of water
8. 8.⚖️ 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 length of the stem (c) the room it stands in (d) the kind of flower
9. 9.🔮 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
10. 10.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) a battery cell (d) a white flower
11. 11.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
12. 12.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.True or false: a glass marble does not let water climb. (a) True (b) False
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
16. 16.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
20. 20.True or false: a cotton thread does not let water climb. (a) False (b) True
21. 21.⚖️ 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 what we measure. (a) True (b) False
22. 22.🛟 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
23. 23.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
24. 24.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
25. 25.⚖️ 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
26. 26.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a steel spoon (d) a flower stem
27. 27.⚖️ 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 what we measure. (a) False (b) True
28. 28.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
29. 29.True or false: a plastic ruler lets water climb up it. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of water (c) time for colour to show
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) a white flower (d) a glass of water
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a piece of foil (d) a flower stem
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a glass of water (d) a magnet
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.True or false: a strip of cloth does not let water climb. (a) False (b) True
37. 37.🔮 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 stay white (c) they turn two colours (d) they fall off at once
38. 38.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
40. 40.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False

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