Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 462 · 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.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a white flower (d) a few hours of waiting
2. 2.💧 Which of these does not let water climb? (a) a piece of chalk (b) a glass marble (c) a paper towel (d) a cotton thread
3. 3.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a piece of chalk
4. 4.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
5. 5.⚖️ 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) False (b) True
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) lick your fingers (d) rub your eyes
7. 7.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
8. 8.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
9. 9.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
11. 11.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
12. 12.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.True or false: a strip of cloth lets water climb up it. (a) False (b) True
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of water (c) the room it stands in (d) the amount of colour
15. 15.⚖️ 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 length of the stem (d) the amount of colour
16. 16.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a toddler (c) a grown-up (d) a pet
18. 18.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a sugar cube (d) a rubber eraser
19. 19.True or false: a rubber eraser lets water climb up it. (a) False (b) True
20. 20.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
21. 21.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a glass of water (d) food colour
22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a sugar cube (d) a piece of foil
23. 23.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
24. 24.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
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.⚖️ 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 measure it (c) we change it
27. 27.True or false: a paper towel does not let water climb. (a) False (b) True
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) yeast (d) food colour
29. 29.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
31. 31.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a flower stem (d) a glass marble
33. 33.⚖️ 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) False (b) True
34. 34.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
35. 35.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of foil (c) a cotton thread (d) a sugar cube
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) food colour (d) a balloon
37. 37.True or false: a piece of foil lets water climb up it. (a) False (b) True
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) the length of the stem (b) the kind of flower (c) time for colour to show
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
40. 40.💧 Which of these does not let water climb? (a) a paper towel (b) a cotton thread (c) a plastic ruler (d) a sugar cube

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