Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 172 · 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 few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
2. 2.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
3. 3.True or false: a rubber eraser lets water climb up it. (a) True (b) False
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a strip of cloth (b) a plastic ruler (c) a paper towel (d) a sugar cube
6. 6.⚖️ 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 amount of colour (c) time for colour to show
7. 7.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
8. 8.⚖️ 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 room it stands in (b) the amount of water (c) the amount of colour (d) the length of the stem
9. 9.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
10. 10.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) evaporation (d) melting
11. 11.💧 Which of these does not let water climb? (a) a cotton thread (b) a piece of foil (c) a piece of chalk (d) a sugar cube
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 magnet (d) a glass of water
13. 13.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
14. 14.True or false: a paper towel does not let water climb. (a) True (b) False
15. 15.🧺 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) a mirror (d) a glass of water
16. 16.🔮 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 all turn green (c) they stay white (d) they turn two colours
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) a white flower (c) a few hours of waiting (d) food colour
19. 19.⚖️ 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
20. 20.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🔍 Which is the odd one out? (a) a glass marble (b) a sugar cube (c) a steel spoon (d) a piece of foil
22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a steel spoon (c) a strip of cloth (d) a piece of chalk
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) yeast (d) a balloon
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a mirror
25. 25.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a balloon
26. 26.True or false: a plastic ruler lets water climb up it. (a) True (b) False
27. 27.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a sugar cube does not let water climb. (a) True (b) False
30. 30.🧺 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) yeast
31. 31.True or false: a sugar cube lets water climb up it. (a) True (b) False
32. 32.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a glass marble (d) a rubber eraser
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
34. 34.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a plastic ruler (d) a steel spoon
37. 37.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
38. 38.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
39. 39.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
40. 40.True or false: a rubber eraser does not let water climb. (a) True (b) False

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