Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 71 · 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? True or false: the length of the stem is kept the same. (a) True (b) False
2. 2.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
3. 3.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
4. 4.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
5. 5.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a toddler (d) a grown-up
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a white flower (d) a few hours of waiting
8. 8.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
9. 9.⚖️ 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) True (b) False
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a paper towel
12. 12.🔍 Which is the odd one out? (a) a plastic ruler (b) a strip of cloth (c) a rubber eraser (d) a piece of foil
13. 13.🔍 Which is the odd one out? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a steel spoon
14. 14.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a strip of cloth (d) a plastic ruler
15. 15.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
16. 16.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) wipe them on walls
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
19. 19.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) petals like colour (c) petals lose water to air (d) the stem is hot
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a glass of water (d) a white flower
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a glass of water (d) food colour
25. 25.⚖️ 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
26. 26.⚖️ 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) time for colour to show (d) the amount of water
27. 27.🔍 Which is the odd one out? (a) a piece of chalk (b) a glass marble (c) a piece of foil (d) a steel spoon
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) it sinks at once (c) it turns to plastic (d) nothing ever happens
29. 29.💧 Which of these does not let water climb? (a) a cotton thread (b) a strip of cloth (c) a paper towel (d) a rubber eraser
30. 30.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.True or false: a cotton thread does not let water climb. (a) False (b) True
32. 32.True or false: a glass marble lets water climb up it. (a) True (b) False
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a sugar cube (d) a steel spoon
35. 35.True or false: a plastic ruler lets water climb up it. (a) False (b) True
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a mirror (d) food colour
39. 39.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed

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