Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 2 · 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.🧺 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 magnet
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
3. 3.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
4. 4.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a glass of water (d) yeast
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) turmeric powder (d) food colour
8. 8.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
9. 9.True or false: a flower stem lets water climb up it. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a plastic ruler (d) a paper towel
11. 11.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a cotton thread (d) a rubber eraser
12. 12.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
13. 13.⚖️ 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 kind of flower (b) the room it stands in (c) the amount of water (d) the length of the stem
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.⚖️ 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) time for colour to show (c) the amount of colour
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a few hours of waiting (d) a balloon
17. 17.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
18. 18.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🧺 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) a glass of water (d) food colour
20. 20.⚖️ 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 kind of flower (b) time for colour to show (c) the room it stands in (d) the amount of water
21. 21.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
22. 22.True or false: a plastic ruler lets water climb up it. (a) False (b) True
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a few hours of waiting
24. 24.⚖️ 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 what we measure. (a) False (b) True
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) food colour (d) a few hours of waiting
26. 26.⚖️ 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
27. 27.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 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 magnet
30. 30.⚖️ 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
31. 31.⚖️ 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) True (b) False
32. 32.🔍 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
33. 33.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
34. 34.💧 Which of these does not let water climb? (a) a rubber eraser (b) a flower stem (c) a paper towel (d) a strip of cloth
35. 35.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
36. 36.⚖️ 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
37. 37.🧺 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
38. 38.True or false: a cotton thread lets water climb up it. (a) False (b) True
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) a white flower (d) a balloon
40. 40.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows

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