Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 738 · 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? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ 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 length of the stem (b) the kind of flower (c) the room it stands in (d) time for colour to show
3. 3.🔮 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 stay white (c) they all turn green (d) they fall off at once
4. 4.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of foil (d) a glass marble
6. 6.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the petals turn bluish (c) the water turns green (d) the stem turns to ice
7. 7.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
8. 8.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
9. 9.True or false: a plastic ruler does not let water climb. (a) True (b) False
10. 10.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
12. 12.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of foil (d) a strip of cloth
13. 13.True or false: a cotton thread does not let water climb. (a) True (b) False
14. 14.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
15. 15.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
16. 16.⚖️ 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 change it (b) we keep it the same (c) we measure it
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) food colour (d) a white flower
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a white flower (d) a glass of water
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) anyone, without looking (d) a grown-up
21. 21.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a mirror
24. 24.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a rubber eraser
26. 26.🔮 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
27. 27.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
28. 28.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a cotton thread (d) a steel spoon
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 kept the same. (a) True (b) False
30. 30.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
31. 31.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a paper towel (d) a steel spoon
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
33. 33.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a magnet (d) food colour
34. 34.True or false: a piece of chalk does not let water climb. (a) False (b) True
35. 35.💧 Which of these does not let water climb? (a) a flower stem (b) a rubber eraser (c) a strip of cloth (d) a cotton thread
36. 36.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
37. 37.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
38. 38.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a glass marble (d) a plastic ruler
40. 40.💧 Dip a strip of cloth 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