Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 650 · 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: a magnet is not needed for the coloured flower experiment. (a) True (b) False
2. 2.True or false: a glass marble does not let water climb. (a) False (b) True
3. 3.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) a flower stem (b) a sugar cube (c) a piece of chalk (d) a steel spoon
5. 5.⚖️ 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) False (b) True
6. 6.True or false: a paper towel does not let water climb. (a) False (b) True
7. 7.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
9. 9.True or false: a piece of chalk does not let water climb. (a) False (b) True
10. 10.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a glass marble (d) a rubber eraser
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a paper towel (c) a steel spoon (d) a glass marble
14. 14.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a flower stem (d) a plastic ruler
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
19. 19.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
20. 20.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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 length of the stem (b) the amount of water (c) the kind of flower (d) the amount of colour
22. 22.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a rubber eraser (d) a piece of foil
23. 23.🔮 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
24. 24.True or false: a piece of foil does not let water climb. (a) False (b) True
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) a magnet
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a glass of water (d) food colour
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a balloon (d) a glass of water
28. 28.⚖️ 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
29. 29.⚖️ 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) 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 what we measure? (a) the kind of flower (b) time for colour to show (c) the amount of colour (d) the length of the stem
31. 31.True or false: a strip of cloth lets water climb up it. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a balloon (d) a magnet
33. 33.⚖️ 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
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the flower floats away (d) the petals turn bluish
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a mirror (d) a glass of water
36. 36.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a plastic ruler (d) a strip of cloth
37. 37.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) food colour (d) a magnet
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a glass of water (d) a white flower
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) turmeric powder (c) a balloon (d) a white flower
40. 40.⚖️ 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 keep it the same (c) we change it

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