Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 145 · 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 is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a strip of cloth (d) a paper towel
2. 2.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
3. 3.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals lose water to air (d) petals are magnetic
4. 4.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) through the air (d) it rains on them
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
7. 7.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a piece of foil (d) a flower stem
8. 8.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
9. 9.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
10. 10.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) yeast (c) a few hours of waiting (d) a battery cell
12. 12.True or false: a piece of chalk lets water climb up it. (a) True (b) False
13. 13.🧺 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 glass of water
14. 14.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) melting (d) capillary action
15. 15.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they fall off at once (c) they all turn green (d) they turn two colours
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.⚖️ 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 amount of water (b) the room it stands in (c) the kind of flower (d) time for colour to show
18. 18.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a piece of chalk (b) a rubber eraser (c) a flower stem (d) a paper towel
20. 20.⚖️ 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
21. 21.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
22. 22.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
24. 24.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the petals turn red (d) the flower glows
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.💧 Which of these does not let water climb? (a) a cotton thread (b) a flower stem (c) a plastic ruler (d) a paper towel
27. 27.💧 Which of these does not let water climb? (a) a flower stem (b) a strip of cloth (c) a steel spoon (d) a cotton thread
28. 28.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
29. 29.🧺 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 glass of water (d) a magnet
30. 30.⚖️ 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
31. 31.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of foil (c) a sugar cube (d) a glass marble
32. 32.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a plastic ruler (d) a strip of cloth
33. 33.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
34. 34.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
35. 35.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a balloon (b) food colour (c) a white flower (d) a glass of water
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a glass of water (c) food colour (d) a few hours of waiting
37. 37.🔍 Which is the odd one out? (a) a piece of foil (b) a piece of chalk (c) a steel spoon (d) a plastic ruler
38. 38.⚖️ 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) time for colour to show (c) the kind of flower (d) the length of the stem
39. 39.⚖️ 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
40. 40.⚖️ 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 change it (b) we measure it (c) we keep it the same

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