Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 837 · 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 paper towel does not let water climb. (a) False (b) True
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) a magnet (d) a battery cell
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) yeast (d) a white flower
4. 4.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
6. 6.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
7. 7.⚖️ 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
8. 8.⚖️ 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 room it stands in (b) the amount of colour (c) the length of the stem (d) time for colour to show
9. 9.True or false: a cotton thread does not let water climb. (a) False (b) True
10. 10.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
11. 11.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
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 change it (b) we keep it the same (c) we measure it
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a glass marble (d) a paper towel
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a few hours of waiting (d) a white flower
15. 15.True or false: a plastic ruler does not let water climb. (a) True (b) False
16. 16.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
17. 17.True or false: a steel spoon lets water climb up it. (a) True (b) False
18. 18.🔮 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
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a magnet (d) a white flower
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
23. 23.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
24. 24.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🔍 Which is the odd one out? (a) a rubber eraser (b) a steel spoon (c) a paper towel (d) a glass marble
28. 28.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a rubber eraser (d) a flower stem
29. 29.⚖️ 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) the room it stands in (c) the kind of flower (d) time for colour to show
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a steel spoon (d) a plastic ruler
31. 31.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green
32. 32.True or false: a rubber eraser does not let water climb. (a) True (b) False
33. 33.True or false: a cotton thread lets water climb up it. (a) False (b) True
34. 34.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
35. 35.⚖️ 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 measure it (c) we change it
36. 36.True or false: a sugar cube does not let water climb. (a) False (b) True
37. 37.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
38. 38.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a steel spoon (d) a piece of foil
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a battery cell (d) a balloon
40. 40.True or false: a strip of cloth lets water climb up it. (a) True (b) False

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