Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 3 · 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 needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a few hours of waiting (d) a battery cell
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 glass of water (d) a battery cell
3. 3.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a flower stem (d) a sugar cube
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) a glass of water
5. 5.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
6. 6.True or false: a strip of cloth does not let water climb. (a) True (b) False
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a magnet (c) a balloon (d) food colour
8. 8.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a cotton thread
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a few hours of waiting (c) a white flower (d) a glass of water
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
13. 13.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a piece of chalk (d) a plastic ruler
14. 14.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a rubber eraser (d) a piece of chalk
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a paper towel (c) a sugar cube (d) a cotton thread
16. 16.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) it turns to plastic (c) nothing ever happens (d) colour climbs up it
18. 18.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) no colour change (c) the stem turns blue (d) the flower glows
19. 19.⚖️ 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
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.True or false: a piece of chalk does not let water climb. (a) True (b) False
22. 22.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they all turn green (d) they fall off at once
23. 23.⚖️ 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 keep it the same (b) we measure it (c) we change it
24. 24.⚖️ 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 water (b) the length of the stem (c) time for colour to show (d) the room it stands in
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a glass of water
26. 26.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
27. 27.🛟 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
28. 28.💧 Which of these lets water climb up it? (a) a steel spoon (b) a sugar cube (c) a plastic ruler (d) a rubber eraser
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) the length of the stem (b) the amount of water (c) time for colour to show
30. 30.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a white flower (d) a mirror
32. 32.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a steel spoon
33. 33.🧺 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 glass of water (d) turmeric powder
34. 34.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) melting (c) evaporation (d) capillary action
36. 36.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
37. 37.⚖️ 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 kept the same. (a) True (b) False
38. 38.True or false: a paper towel does not let water climb. (a) False (b) True
39. 39.⚖️ 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
40. 40.💧 Which of these does not let water climb? (a) a sugar cube (b) a paper towel (c) a strip of cloth (d) a piece of foil

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