Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 104 · 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.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a flower stem
3. 3.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
4. 4.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
5. 5.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) wipe them on walls (d) lick your fingers
6. 6.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they turn two colours (d) they stay white
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) a white flower (d) a magnet
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a grown-up (c) a toddler (d) anyone, without looking
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
12. 12.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) yeast
15. 15.🔍 Which is the odd one out? (a) a sugar cube (b) a rubber eraser (c) a plastic ruler (d) a steel spoon
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
19. 19.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
21. 21.🌼 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
22. 22.🔍 Which is the odd one out? (a) a plastic ruler (b) a flower stem (c) a rubber eraser (d) a glass marble
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) a few hours of waiting (d) turmeric powder
24. 24.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
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 water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.⚖️ 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
29. 29.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
30. 30.⚖️ 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) time for colour to show (b) the length of the stem (c) the amount of colour (d) the amount of water
31. 31.🔍 Which is the odd one out? (a) a flower stem (b) a plastic ruler (c) a paper towel (d) a strip of cloth
32. 32.🔮 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
33. 33.⚖️ 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 length of the stem (b) the amount of water (c) the amount of colour (d) time for colour to show
34. 34.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
35. 35.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
36. 36.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
37. 37.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a sugar cube (c) a piece of foil (d) a steel spoon
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a glass of water (d) a balloon
40. 40.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a paper towel

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