Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 860 · 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.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a pet (d) a toddler
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a glass of water (c) a white flower (d) a few hours of waiting
4. 4.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
5. 5.🌼 How does coloured water reach the petals? (a) it rains on them (b) it is sprayed on (c) through the air (d) through tiny stem tubes
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
7. 7.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a balloon (c) a mirror (d) a magnet
9. 9.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.🔮 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 fall off at once (c) they all turn green (d) they stay white
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a few hours of waiting (c) a glass of water (d) food colour
12. 12.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) melting (c) capillary action (d) magnetism
14. 14.⚖️ 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
15. 15.🧺 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
16. 16.⚖️ 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) True (b) False
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 amount of water is kept the same. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a rubber eraser (b) a plastic ruler (c) a sugar cube (d) a glass marble
20. 20.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the petals turn red (d) the flower glows
21. 21.🔍 Which is the odd one out? (a) a piece of chalk (b) a plastic ruler (c) a strip of cloth (d) a paper towel
22. 22.True or false: a paper towel does not let water climb. (a) True (b) False
23. 23.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) nothing ever happens (d) colour climbs up it
24. 24.⚖️ 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 kind of flower (b) the room it stands in (c) the amount of colour (d) time for colour to show
25. 25.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
26. 26.⚖️ 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 length of the stem (d) the amount of water
27. 27.True or false: a strip of cloth lets water climb up it. (a) True (b) False
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) food colour (d) a white flower
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a battery cell (d) a glass of water
33. 33.⚖️ 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
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the petals turn bluish (d) the stem turns to ice
35. 35.💧 Which of these lets water climb up it? (a) a piece of foil (b) a glass marble (c) a sugar cube (d) a plastic ruler
36. 36.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a battery cell (c) a balloon (d) a few hours of waiting
37. 37.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
39. 39.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a paper towel (d) a steel spoon
40. 40.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals are magnetic (d) petals like colour

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