Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 124 · 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.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
2. 2.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
3. 3.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the stem turns blue (d) the flower glows
4. 4.True or false: a glass marble does not let water climb. (a) True (b) False
5. 5.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a plastic ruler
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.⚖️ 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
9. 9.⚖️ 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 keep it the same (c) we measure it
10. 10.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a cotton thread (d) a rubber eraser
12. 12.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.True or false: a paper towel lets water climb up it. (a) False (b) True
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
16. 16.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a plastic ruler (d) a rubber eraser
17. 17.💧 Which of these does not let water climb? (a) a glass marble (b) a cotton thread (c) a piece of chalk (d) a paper towel
18. 18.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
19. 19.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ 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 amount of water (b) time for colour to show (c) the kind of flower (d) the amount of colour
21. 21.⚖️ 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) the amount of water (c) the amount of colour (d) the length of the stem
22. 22.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) food colour (d) yeast
24. 24.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a white flower
26. 26.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
27. 27.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a battery cell (c) a white flower (d) a few hours of waiting
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) food colour (d) a white flower
29. 29.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
30. 30.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a piece of chalk (d) a piece of foil
32. 32.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a glass marble (d) a steel spoon
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a mirror (d) yeast
35. 35.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the kind of flower
37. 37.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: a rubber eraser lets water climb up it. (a) True (b) False
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a battery cell (d) a mirror
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a battery cell (c) food colour (d) a glass of water

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