Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 239 · 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.True or false: a sugar cube lets water climb up it. (a) False (b) True
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
3. 3.🔍 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
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a balloon (c) a few hours of waiting (d) a white flower
5. 5.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a mirror (c) a few hours of waiting (d) a glass of water
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a few hours of waiting (c) food colour (d) yeast
7. 7.💧 Which of these lets water climb up it? (a) a flower stem (b) a piece of foil (c) a steel spoon (d) a glass marble
8. 8.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a flower stem (d) a rubber eraser
9. 9.True or false: a white flower is not needed for the coloured flower experiment. (a) True (b) False
10. 10.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) wash your hands (d) rub your eyes
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) yeast (c) a glass of water (d) a white flower
12. 12.🔍 Which is the odd one out? (a) a flower stem (b) a piece of foil (c) a paper towel (d) a sugar cube
13. 13.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a glass marble (d) a rubber eraser
14. 14.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a flower stem (d) a strip of cloth
17. 17.💧 Which of these does not let water climb? (a) a sugar cube (b) a rubber eraser (c) a cotton thread (d) a flower stem
18. 18.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
19. 19.⚖️ 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
20. 20.⚖️ 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) True (b) False
21. 21.🧺 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) a magnet
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🔍 Which is the odd one out? (a) a plastic ruler (b) a cotton thread (c) a steel spoon (d) a glass marble
24. 24.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: a flower stem lets water climb up it. (a) True (b) False
26. 26.⚖️ 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 kind of flower (b) the room it stands in (c) the amount of water (d) time for colour to show
27. 27.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) it rains on them (d) through tiny stem tubes
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a glass of water (d) food colour
29. 29.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a rubber eraser (d) a piece of chalk
30. 30.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
33. 33.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
34. 34.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
35. 35.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
36. 36.True or false: a piece of foil does not let water climb. (a) True (b) False
37. 37.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
38. 38.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
39. 39.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
40. 40.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking

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