Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 842 · 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 few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
4. 4.💧 Which of these lets water climb up it? (a) a sugar cube (b) a rubber eraser (c) a piece of foil (d) a glass marble
5. 5.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
6. 6.⚖️ 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 kind of flower (c) time for colour to show (d) the length of the stem
7. 7.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
8. 8.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
9. 9.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a few hours of waiting (c) yeast (d) a balloon
10. 10.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
12. 12.True or false: a cotton thread lets water climb up it. (a) False (b) True
13. 13.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
14. 14.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a white flower (d) a few hours of waiting
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) food colour (d) yeast
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
18. 18.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
20. 20.⚖️ 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 change it (c) we keep it the same
21. 21.True or false: a paper towel does not let water climb. (a) True (b) False
22. 22.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a strip of cloth (d) a plastic ruler
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) a glass of water
24. 24.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a battery cell
26. 26.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.⚖️ 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 colour (c) the room it stands in (d) the kind of flower
28. 28.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a steel spoon
30. 30.🔍 Which is the odd one out? (a) a rubber eraser (b) a glass marble (c) a strip of cloth (d) a piece of foil
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a white flower (d) a balloon
32. 32.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
33. 33.🔍 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
34. 34.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) no colour change (d) the petals turn red
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
36. 36.⚖️ 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) False (b) True
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a piece of foil (d) a rubber eraser
38. 38.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
39. 39.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids