Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 117 · 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 glass of water is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
3. 3.⚖️ 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 length of the stem (c) the kind of flower (d) the amount of colour
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) False (b) True
5. 5.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
6. 6.💧 Which of these lets water climb up it? (a) a sugar cube (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
7. 7.True or false: a cotton thread does not let water climb. (a) True (b) False
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
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 room it stands in (c) the length of the stem
10. 10.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
11. 11.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
12. 12.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) turmeric powder (d) a balloon
14. 14.🔮 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 fall off at once (c) they stay white (d) they turn two colours
15. 15.⚖️ 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
16. 16.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
17. 17.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) a white flower (d) food colour
19. 19.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a mirror
21. 21.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
22. 22.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
24. 24.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a glass marble lets water climb up it. (a) True (b) False
26. 26.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a plastic ruler (d) a strip of cloth
30. 30.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a mirror (d) a balloon
31. 31.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a rubber eraser (c) a piece of foil (d) a glass marble
34. 34.True or false: a sugar cube lets water climb up it. (a) False (b) True
35. 35.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
36. 36.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
37. 37.💧 Dip a cotton thread 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 rubber eraser (b) a strip of cloth (c) a cotton thread (d) a paper towel
39. 39.⚖️ 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
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a white flower (d) yeast

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