Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 681 · 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.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
2. 2.💧 Dip a paper towel 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 mirror for the coloured flower experiment? (a) not needed (b) needed
4. 4.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
5. 5.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals lose water to air (d) petals like colour
6. 6.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
7. 7.⚖️ 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 measure it (c) we change it
8. 8.⚖️ 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 what we measure. (a) True (b) False
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 what we measure. (a) False (b) True
10. 10.🔮 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 turn two colours (c) they fall off at once (d) they all turn green
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a magnet (c) food colour (d) a battery cell
12. 12.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
13. 13.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a few hours of waiting (d) a white flower
15. 15.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
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) yeast
17. 17.⚖️ 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
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
19. 19.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a glass marble (d) a flower stem
20. 20.🔍 Which is the odd one out? (a) a sugar cube (b) a cotton thread (c) a piece of chalk (d) a piece of foil
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a cotton thread (d) a steel spoon
23. 23.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of chalk (c) a sugar cube (d) a rubber eraser
24. 24.💧 Which of these lets water climb up it? (a) a sugar cube (b) a piece of foil (c) a steel spoon (d) a glass marble
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a plastic ruler (d) a glass marble
26. 26.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
27. 27.🌼 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
28. 28.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of chalk (c) a sugar cube (d) a cotton thread
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) food colour (d) a battery cell
30. 30.💧 Which of these does not let water climb? (a) a piece of foil (b) a piece of chalk (c) a strip of cloth (d) a paper towel
31. 31.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a piece of foil (d) a plastic ruler
32. 32.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a paper towel (d) a glass marble
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a battery cell (d) a white flower
34. 34.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) yeast (d) a magnet
35. 35.⚖️ 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 amount of water (b) the amount of colour (c) the kind of flower (d) time for colour to show
36. 36.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the stem turns blue (d) the flower glows
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) a rubber eraser (c) a plastic ruler (d) a paper towel
38. 38.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a sugar cube (d) a strip of cloth
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a mirror
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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