Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 871 · 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 flower stem lets water climb up it. (a) True (b) False
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) it sinks at once (d) colour climbs up it
3. 3.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) a white flower (d) food colour
6. 6.True or false: a sugar cube lets water climb up it. (a) True (b) False
7. 7.💧 Which of these does not let water climb? (a) a piece of foil (b) a cotton thread (c) a sugar cube (d) a paper towel
8. 8.🔍 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
9. 9.⚖️ 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
10. 10.⚖️ 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 length of the stem (c) the amount of colour
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
13. 13.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a battery cell (c) a mirror (d) a few hours of waiting
15. 15.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) turmeric powder (d) a white flower
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) food colour (d) a white flower
18. 18.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
19. 19.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
20. 20.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
21. 21.True or false: a paper towel does not let water climb. (a) False (b) True
22. 22.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
23. 23.⚖️ 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 the one thing we change. (a) True (b) False
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
25. 25.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Which of these does not let water climb? (a) a steel spoon (b) a sugar cube (c) a piece of chalk (d) a paper towel
27. 27.⚖️ 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 keep it the same (c) we change it
28. 28.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a piece of foil (d) a flower stem
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) a grown-up (d) anyone, without looking
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a battery cell (d) turmeric powder
32. 32.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
33. 33.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.⚖️ 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 water (c) the length of the stem (d) the kind of flower
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a magnet (d) a white flower
36. 36.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a white flower (d) a balloon
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a white flower (d) a battery cell
39. 39.⚖️ 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
40. 40.⚖️ 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 kept the same. (a) True (b) False

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