Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 956 · 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.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a glass of water
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
3. 3.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of colour (d) time for colour to show
4. 4.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) nothing ever happens (c) colour climbs up it (d) it sinks at once
5. 5.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
6. 6.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
7. 7.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a piece of chalk (d) a piece of foil
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a sugar cube (d) a glass marble
12. 12.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a cotton thread (d) a steel spoon
14. 14.True or false: a cotton thread does not let water climb. (a) False (b) True
15. 15.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a glass of water (d) turmeric powder
17. 17.⚖️ 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 change it (c) we measure it
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 stay white (b) they all turn green (c) they fall off at once (d) they turn two colours
19. 19.⚖️ 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 room it stands in (c) the amount of water (d) the length of the stem
20. 20.🔍 Which is the odd one out? (a) a strip of cloth (b) a glass marble (c) a piece of chalk (d) a cotton thread
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a battery cell (d) a glass of water
22. 22.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) yeast (c) food colour (d) a white flower
24. 24.⚖️ 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) False (b) True
25. 25.True or false: a glass of water is needed for the coloured flower experiment. (a) True (b) False
26. 26.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
27. 27.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the stem turns to ice (c) the flower floats away (d) the water turns green
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a steel spoon (d) a piece of chalk
29. 29.True or false: a sugar cube does not let water climb. (a) False (b) True
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) a few hours of waiting (d) a glass of water
31. 31.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
32. 32.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
34. 34.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a plastic ruler (d) a sugar cube
35. 35.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a glass of water
38. 38.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
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 kept the same. (a) False (b) True
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 what we measure. (a) True (b) False

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