Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 215 · 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.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
2. 2.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
3. 3.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a plastic ruler (d) a flower stem
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.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of chalk (c) a flower stem (d) a rubber eraser
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) yeast (d) a glass of water
9. 9.⚖️ 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) True (b) False
10. 10.💧 Which of these does not let water climb? (a) a piece of foil (b) a paper towel (c) a sugar cube (d) a flower stem
11. 11.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
12. 12.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
13. 13.⚖️ 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 length of the stem (b) the amount of colour (c) time for colour to show (d) the room it stands in
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.True or false: a strip of cloth does not let water climb. (a) False (b) True
16. 16.🧺 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) yeast
17. 17.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) food colour (d) a balloon
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 what we measure. (a) True (b) False
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a magnet (d) a few hours of waiting
21. 21.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a piece of chalk
22. 22.True or false: a paper towel does not let water climb. (a) False (b) True
23. 23.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a battery cell (c) a mirror (d) a glass of water
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a mirror (d) a few hours of waiting
28. 28.True or false: a flower stem does not let water climb. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a paper towel (d) a steel spoon
30. 30.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a rubber eraser (c) a strip of cloth (d) a steel spoon
31. 31.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
32. 32.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they all turn green (c) they turn two colours (d) they stay white
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
35. 35.⚖️ 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) False (b) True
36. 36.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) through the air (d) it is sprayed on
37. 37.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed

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