Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 441 · 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.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
2. 2.🧺 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 white flower (d) a magnet
3. 3.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
4. 4.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a steel spoon
6. 6.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) through tiny stem tubes (d) it rains on them
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a cotton thread (d) a paper towel
9. 9.⚖️ 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) False (b) True
10. 10.True or false: a white flower is needed for the coloured flower experiment. (a) False (b) True
11. 11.⚖️ 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 length of the stem (b) the room it stands in (c) the kind of flower (d) time for colour to show
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a balloon (c) turmeric powder (d) yeast
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a rubber eraser (d) a glass marble
18. 18.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
20. 20.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
21. 21.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a glass of water (d) a white flower
24. 24.💧 Which of these does not let water climb? (a) a sugar cube (b) a cotton thread (c) a rubber eraser (d) a paper towel
25. 25.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
26. 26.⚖️ 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
27. 27.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a flower stem (d) a piece of foil
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
30. 30.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
31. 31.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a glass marble (c) a piece of chalk (d) a rubber eraser
32. 32.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
33. 33.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they all turn green (c) they stay white (d) they fall off at once
35. 35.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the stem turns blue (c) no colour change (d) the petals turn red
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.True or false: a paper towel lets water climb up it. (a) True (b) False
38. 38.🛟 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
39. 39.True or false: a paper towel does not let water climb. (a) True (b) False
40. 40.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True

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