Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 136 · 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 rubber eraser lets water climb up it. (a) False (b) True
2. 2.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
3. 3.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.💧 Which of these does not let water climb? (a) a strip of cloth (b) a glass marble (c) a piece of chalk (d) a cotton thread
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) evaporation (d) magnetism
6. 6.True or false: a paper towel does not let water climb. (a) True (b) False
7. 7.True or false: a rubber eraser does not let water climb. (a) False (b) True
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
9. 9.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show (d) the amount of colour
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
11. 11.💧 Which of these does not let water climb? (a) a piece of chalk (b) a strip of cloth (c) a flower stem (d) a piece of foil
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a balloon
13. 13.💧 Dip a sugar cube 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 needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a few hours of waiting (d) a mirror
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the amount of colour (b) time for colour to show (c) the length of the stem
18. 18.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a toddler (d) a grown-up
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals are magnetic (c) the stem is hot (d) petals lose water to air
21. 21.🌼 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
22. 22.🔮 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
23. 23.True or false: a sugar cube lets water climb up it. (a) False (b) True
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a steel spoon (d) a strip of cloth
27. 27.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
28. 28.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
29. 29.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
30. 30.True or false: a piece of foil lets water climb up it. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a glass marble
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a mirror (d) turmeric powder
33. 33.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
34. 34.⚖️ 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) time for colour to show (d) the amount of colour
35. 35.True or false: a steel spoon does not let water climb. (a) False (b) True
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the kind of flower (c) time for colour to show
37. 37.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a cotton thread (d) a piece of chalk
38. 38.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed

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