Capillary Action Flower Experiment Worksheet

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

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