Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 690 · 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) a mirror (b) a few hours of waiting (c) food colour (d) a glass of water
2. 2.⚖️ 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 water
3. 3.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
4. 4.💧 Which of these lets water climb up it? (a) a piece of foil (b) a sugar cube (c) a rubber eraser (d) a steel spoon
5. 5.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
6. 6.⚖️ 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) time for colour to show (c) the kind of flower (d) the amount of water
7. 7.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
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 the one thing we change. (a) True (b) False
9. 9.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it rains on them (d) it is sprayed on
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 water (b) the amount of colour (c) the length of the stem (d) the kind of flower
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
13. 13.💧 Which of these lets water climb up it? (a) a cotton thread (b) a plastic ruler (c) a glass marble (d) a rubber eraser
14. 14.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) anyone, without looking (d) a toddler
15. 15.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) yeast (d) a white flower
17. 17.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
19. 19.True or false: a glass marble lets water climb up it. (a) True (b) False
20. 20.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a glass of water (c) a white flower (d) a few hours of waiting
21. 21.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) wash your hands (d) lick your fingers
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) turmeric powder (d) a battery cell
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) a balloon
24. 24.🔍 Which is the odd one out? (a) a paper towel (b) a plastic ruler (c) a flower stem (d) a cotton thread
25. 25.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
26. 26.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a cotton thread (c) a paper towel (d) a sugar cube
29. 29.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a balloon (d) a magnet
33. 33.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a cotton thread (d) a steel spoon
34. 34.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
35. 35.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a strip of cloth
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.True or false: a strip of cloth does not let water climb. (a) True (b) False
39. 39.True or false: a glass of water is not needed for the coloured flower experiment. (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 length of the stem is kept the same. (a) False (b) True

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