Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 514 · 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.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
2. 2.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it turns to plastic (d) it sinks at once
3. 3.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔮 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 fall off at once (c) they all turn green (d) they turn two colours
6. 6.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a steel spoon (d) a plastic ruler
7. 7.⚖️ 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) False (b) True
8. 8.True or false: a piece of chalk does not let water climb. (a) True (b) False
9. 9.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a cotton thread (c) a glass marble (d) a piece of foil
10. 10.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a paper towel (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 toddler (c) a pet (d) anyone, without looking
15. 15.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) turmeric powder (c) food colour (d) yeast
16. 16.True or false: a sugar cube lets water climb up it. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a paper towel (d) a piece of foil
18. 18.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
19. 19.💧 Which of these does not let water climb? (a) a cotton thread (b) a glass marble (c) a paper towel (d) a strip of cloth
20. 20.True or false: a steel spoon lets water climb up it. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a steel spoon (d) a piece of chalk
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
23. 23.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a plastic ruler
24. 24.🔍 Which is the odd one out? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a sugar cube
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a glass of water (d) a white flower
26. 26.⚖️ 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
27. 27.True or false: a strip of cloth lets water climb up it. (a) False (b) True
28. 28.💧 Which of these does not let water climb? (a) a sugar cube (b) a flower stem (c) a rubber eraser (d) a cotton thread
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a rubber eraser (d) a piece of chalk
30. 30.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a piece of foil (d) a paper towel
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) food colour (c) a glass of water (d) a few hours of waiting
32. 32.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) food colour (d) a few hours of waiting
34. 34.🔍 Which is the odd one out? (a) a flower stem (b) a cotton thread (c) a sugar cube (d) a glass marble
35. 35.⚖️ 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) False (b) True
36. 36.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) True (b) False
38. 38.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a white flower (c) food colour (d) a few hours of waiting
39. 39.🧺 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) turmeric powder
40. 40.⚖️ 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) True (b) False

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