Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 62 · 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.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
2. 2.💧 Which of these does not let water climb? (a) a piece of foil (b) a piece of chalk (c) a cotton thread (d) a sugar cube
3. 3.⚖️ 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 what we measure. (a) False (b) True
4. 4.True or false: a magnet is needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) food colour (d) a few hours of waiting
6. 6.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a battery cell (c) a white flower (d) a glass of water
8. 8.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) petals lose water to air (c) the stem is hot (d) petals are magnetic
9. 9.🔍 Which is the odd one out? (a) a glass marble (b) a piece of chalk (c) a steel spoon (d) a piece of foil
10. 10.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a rubber eraser
11. 11.💧 Which of these does not let water climb? (a) a plastic ruler (b) a sugar cube (c) a strip of cloth (d) a flower stem
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the water turns green (c) the petals turn bluish (d) the stem turns to ice
13. 13.💧 Which of these does not let water climb? (a) a steel spoon (b) a strip of cloth (c) a cotton thread (d) a paper towel
14. 14.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
15. 15.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
16. 16.True or false: a few hours of waiting 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? True or false: the length of the stem is the one thing we change. (a) True (b) False
18. 18.⚖️ 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) True (b) False
19. 19.True or false: a rubber eraser lets water climb up it. (a) True (b) False
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) yeast (d) a balloon
22. 22.🔍 Which is the odd one out? (a) a piece of foil (b) a rubber eraser (c) a steel spoon (d) a strip of cloth
23. 23.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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 kind of flower (c) the length of the stem (d) the room it stands in
26. 26.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a balloon (d) a battery cell
28. 28.🌼 How does coloured water reach the petals? (a) through the air (b) it is sprayed on (c) through tiny stem tubes (d) it rains on them
29. 29.⚖️ 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 room it stands in
30. 30.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🛟 What should you do after handling food colour? (a) wipe them on walls (b) rub your eyes (c) lick your fingers (d) wash your hands
32. 32.True or false: a plastic ruler lets water climb up it. (a) False (b) True
33. 33.⚖️ 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 kind of flower (c) the room it stands in (d) the amount of colour
34. 34.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the petals turn red (d) the stem turns blue
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) False (b) True
37. 37.⚖️ 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 kind of flower (c) the length of the stem
38. 38.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
39. 39.True or false: a glass marble lets water climb up it. (a) True (b) False
40. 40.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism

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