Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 292 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals like colour (c) petals are magnetic (d) the stem is hot
2. 2.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
4. 4.⚖️ 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 amount of colour (b) the amount of water (c) the kind of flower (d) the length of the stem
5. 5.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a flower stem (d) a glass marble
6. 6.True or false: a paper towel does not let water climb. (a) False (b) True
7. 7.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
9. 9.🧺 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 glass of water (d) a white flower
10. 10.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a sugar cube (d) a plastic ruler
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the water turns green (d) the stem turns to ice
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) food colour (d) a balloon
14. 14.True or false: a paper towel lets water climb up it. (a) False (b) True
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) yeast (d) a glass of water
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) a magnet (d) a glass of water
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the kind of flower (d) the amount of water
18. 18.🛟 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
19. 19.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
20. 20.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) anyone, without looking (d) a toddler
21. 21.True or false: a strip of cloth does not let water climb. (a) True (b) False
22. 22.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
23. 23.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
24. 24.⚖️ 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 length of the stem (b) time for colour to show (c) the room it stands in
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of chalk (c) a rubber eraser (d) a piece of foil
27. 27.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
30. 30.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
31. 31.True or false: a sugar cube lets water climb up it. (a) True (b) False
32. 32.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a battery cell (d) a glass of water
35. 35.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
37. 37.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a rubber eraser (d) a plastic ruler
39. 39.⚖️ 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
40. 40.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb

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