Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 747 · 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.⚖️ 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) time for colour to show (c) the kind of flower
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) a glass of water
3. 3.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a glass of water (d) food colour
5. 5.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) False (b) True
7. 7.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
8. 8.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
9. 9.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a paper towel (d) a piece of foil
10. 10.🧺 Do we need a battery cell for the coloured flower experiment? (a) not needed (b) needed
11. 11.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.🔮 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
13. 13.💧 Which of these does not let water climb? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a piece of foil
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a balloon (c) food colour (d) a magnet
15. 15.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.⚖️ 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 water (c) time for colour to show
17. 17.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) yeast (d) a mirror
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a magnet (c) food colour (d) a glass of water
20. 20.⚖️ 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 what we measure. (a) True (b) False
21. 21.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem (d) the kind of flower
22. 22.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
23. 23.💧 Which of these lets water climb up it? (a) a piece of chalk (b) a glass marble (c) a piece of foil (d) a plastic ruler
24. 24.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
25. 25.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a few hours of waiting (c) a battery cell (d) a balloon
27. 27.⚖️ 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) time for colour to show (c) the amount of colour
28. 28.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a mirror (d) food colour
30. 30.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) lick your fingers (d) wash your hands
31. 31.⚖️ 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 amount of colour (b) the length of the stem (c) time for colour to show (d) the room it stands in
32. 32.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) yeast (c) food colour (d) a glass of water
33. 33.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a glass marble (d) a sugar cube
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the flower floats away (d) the water turns green
35. 35.🧺 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) yeast (d) a white flower
36. 36.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a steel spoon (d) a piece of chalk
38. 38.⚖️ 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
39. 39.True or false: a piece of chalk does not let water climb. (a) False (b) True
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic

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