Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 604 · 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.⚖️ 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 keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) food colour
3. 3.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a paper towel
4. 4.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
5. 5.⚖️ 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 room it stands in (b) time for colour to show (c) the amount of water (d) the length of the stem
6. 6.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a sugar cube
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
9. 9.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
11. 11.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
12. 12.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) through tiny stem tubes (d) it is sprayed on
13. 13.⚖️ 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
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
15. 15.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a rubber eraser (d) a piece of foil
16. 16.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show
17. 17.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) turmeric powder (c) a white flower (d) food colour
19. 19.True or false: a rubber eraser does not let water climb. (a) True (b) False
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) yeast
21. 21.True or false: a strip of cloth does not let water climb. (a) True (b) False
22. 22.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) a steel spoon (b) a strip of cloth (c) a glass marble (d) a plastic ruler
25. 25.⚖️ 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
26. 26.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) turmeric powder (d) a mirror
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
31. 31.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
32. 32.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a white flower (d) a mirror
34. 34.⚖️ 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
35. 35.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
37. 37.💧 Which of these does not let water climb? (a) a flower stem (b) a cotton thread (c) a paper towel (d) a rubber eraser
38. 38.🔍 Which is the odd one out? (a) a plastic ruler (b) a sugar cube (c) a rubber eraser (d) a steel spoon
39. 39.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a glass marble (d) a flower stem
40. 40.True or false: a piece of foil lets water climb up it. (a) False (b) True

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