Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 217 · 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? True or false: the amount of water is the one thing we change. (a) False (b) True
2. 2.🔮 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 all turn green (c) they stay white (d) they turn two colours
3. 3.⚖️ 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
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a flower stem (d) a glass marble
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
6. 6.💧 Which of these does not let water climb? (a) a glass marble (b) a sugar cube (c) a piece of chalk (d) a paper towel
7. 7.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) magnetism (d) capillary action
8. 8.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
10. 10.⚖️ 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 colour (d) the kind of flower
11. 11.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
12. 12.💧 Which of these does not let water climb? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a cotton thread
13. 13.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
14. 14.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
15. 15.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
16. 16.💧 Which of these lets water climb up it? (a) a strip of cloth (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
17. 17.⚖️ 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
18. 18.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a rubber eraser
19. 19.True or false: a paper towel does not let water climb. (a) True (b) False
20. 20.⚖️ 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 kept the same. (a) True (b) False
21. 21.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a white flower (c) a glass of water (d) a few hours of waiting
24. 24.⚖️ 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 water (b) the length of the stem (c) the amount of colour (d) the kind of flower
25. 25.🧺 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 glass of water (d) a mirror
26. 26.True or false: a cotton thread does not let water climb. (a) False (b) True
27. 27.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a mirror (d) a few hours of waiting
33. 33.🔍 Which is the odd one out? (a) a flower stem (b) a piece of chalk (c) a rubber eraser (d) a cotton thread
34. 34.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the flower glows (c) the petals turn red (d) the stem turns blue
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
36. 36.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
37. 37.True or false: a glass marble does not let water climb. (a) False (b) True
38. 38.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.⚖️ 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
40. 40.⚖️ 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

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