Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 316 · 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 of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a white flower (d) a magnet
2. 2.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.🧺 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 battery cell (d) food colour
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
6. 6.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
7. 7.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) yeast (d) a glass of water
9. 9.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a piece of chalk
10. 10.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) colour climbs up it (d) nothing ever happens
11. 11.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.⚖️ 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 colour (b) the length of the stem (c) the kind of flower (d) time for colour to show
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 keep it the same (b) we change it (c) we measure it
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a sugar cube (d) a paper towel
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: a flower stem lets water climb up it. (a) False (b) True
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a balloon (d) a white flower
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) food colour (d) turmeric powder
22. 22.🌼 How does coloured water reach the petals? (a) it rains on them (b) through the air (c) it is sprayed on (d) through tiny stem tubes
23. 23.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
24. 24.True or false: a plastic ruler lets water climb up it. (a) True (b) False
25. 25.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
26. 26.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
28. 28.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a cotton thread (d) a plastic ruler
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a few hours of waiting (d) food colour
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) turmeric powder (d) a balloon
33. 33.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
34. 34.⚖️ 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
35. 35.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a plastic ruler (d) a piece of foil
36. 36.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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) time for colour to show (c) the kind of flower
38. 38.True or false: a piece of chalk does not let water climb. (a) True (b) False
39. 39.⚖️ 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) time for colour to show (c) the amount of colour
40. 40.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a glass of water

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