Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 144 · 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 strip of cloth (b) a piece of chalk (c) a steel spoon (d) a paper towel
2. 2.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
3. 3.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) no colour change (c) the stem turns blue (d) the petals turn red
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) turmeric powder (c) food colour (d) a glass of water
5. 5.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
6. 6.⚖️ 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
7. 7.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
8. 8.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
9. 9.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.⚖️ 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 water (d) time for colour to show
11. 11.🔍 Which is the odd one out? (a) a sugar cube (b) a paper towel (c) a flower stem (d) a rubber eraser
12. 12.True or false: a paper towel lets water climb up it. (a) True (b) False
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.True or false: a strip of cloth does not let water climb. (a) False (b) True
15. 15.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals lose water to air (d) petals are magnetic
16. 16.True or false: a cotton thread does not let water climb. (a) False (b) True
17. 17.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a glass marble (d) a sugar cube
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) colour climbs up it (d) it turns to plastic
19. 19.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a sugar cube (d) a plastic ruler
20. 20.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a steel spoon (d) a plastic ruler
21. 21.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
22. 22.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
27. 27.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they fall off at once (c) they stay white (d) they turn two colours
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
31. 31.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a few hours of waiting (c) food colour (d) a white flower
33. 33.⚖️ 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) True (b) False
34. 34.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
35. 35.⚖️ 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 room it stands in (b) the kind of flower (c) the length of the stem (d) the amount of colour
36. 36.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a glass of water (d) yeast
38. 38.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed
39. 39.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
40. 40.💧 Which of these does not let water climb? (a) a flower stem (b) a paper towel (c) a cotton thread (d) a steel spoon

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