Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 365 · 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.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they turn two colours (d) they all turn green
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) False (b) True
3. 3.💧 Which of these lets water climb up it? (a) a glass marble (b) a sugar cube (c) a rubber eraser (d) a piece of foil
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
5. 5.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) wipe them on walls (d) rub your eyes
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a battery cell (c) a glass of water (d) a white flower
7. 7.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
8. 8.True or false: a strip of cloth does not let water climb. (a) True (b) False
9. 9.⚖️ 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
10. 10.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
11. 11.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) petals are magnetic (d) the stem is hot
12. 12.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
13. 13.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a piece of foil (d) a sugar cube
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) a white flower
15. 15.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
16. 16.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a paper towel (d) a flower stem
17. 17.🔮 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
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) a white flower (d) a few hours of waiting
20. 20.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
21. 21.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the flower floats away (d) the stem turns to ice
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
25. 25.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: a flower stem does not let water climb. (a) True (b) False
27. 27.💧 Which of these does not let water climb? (a) a cotton thread (b) a sugar cube (c) a flower stem (d) a steel spoon
28. 28.🔍 Which is the odd one out? (a) a piece of chalk (b) a sugar cube (c) a steel spoon (d) a paper towel
29. 29.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a rubber eraser (d) a plastic ruler
30. 30.💧 Which of these does not let water climb? (a) a strip of cloth (b) a sugar cube (c) a cotton thread (d) a rubber eraser
31. 31.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a plastic ruler (d) a piece of chalk
33. 33.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
34. 34.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
35. 35.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
39. 39.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
40. 40.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed

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