Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 694 · 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.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
2. 2.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.⚖️ 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 the one thing we change. (a) True (b) False
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a glass marble (d) a piece of foil
6. 6.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) food colour (d) a glass of water
7. 7.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
8. 8.⚖️ 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
9. 9.True or false: a paper towel does not let water climb. (a) True (b) False
10. 10.⚖️ 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 kind of flower (c) the length of the stem (d) the amount of water
11. 11.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a piece of foil (d) a paper towel
12. 12.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
13. 13.💧 Which of these lets water climb up it? (a) a sugar cube (b) a plastic ruler (c) a steel spoon (d) a glass marble
14. 14.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) a white flower (d) food colour
16. 16.True or false: a sugar cube lets water climb up it. (a) True (b) False
17. 17.True or false: a cotton thread lets water climb up it. (a) False (b) True
18. 18.💧 Which of these does not let water climb? (a) a rubber eraser (b) a piece of chalk (c) a cotton thread (d) a strip of cloth
19. 19.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they fall off at once (d) they stay white
20. 20.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) capillary action (c) melting (d) magnetism
21. 21.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a cotton thread (d) a steel spoon
22. 22.True or false: a flower stem does not let water climb. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a mirror (d) a magnet
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a glass of water (d) a few hours of waiting
25. 25.⚖️ 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) True (b) False
26. 26.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a white flower (c) yeast (d) a few hours of waiting
30. 30.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
31. 31.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a paper towel (d) a steel spoon
33. 33.💧 Which of these lets water climb up it? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a strip of cloth
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a glass marble (d) a piece of foil
35. 35.🔍 Which is the odd one out? (a) a piece of foil (b) a paper towel (c) a glass marble (d) a rubber eraser
36. 36.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
37. 37.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the stem turns blue (c) the flower glows (d) no colour change
38. 38.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) True (b) False
39. 39.⚖️ 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 the one thing we change. (a) True (b) False
40. 40.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False

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