Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 887 · 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 lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a steel spoon (d) a cotton thread
2. 2.True or false: a piece of foil does not let water climb. (a) True (b) False
3. 3.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.True or false: a paper towel does not let water climb. (a) True (b) False
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
7. 7.True or false: a glass of water is not needed for the coloured flower experiment. (a) False (b) True
8. 8.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a steel spoon (d) a piece of foil
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
11. 11.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a paper towel (b) a piece of chalk (c) a plastic ruler (d) a strip of cloth
14. 14.💧 Which of these does not let water climb? (a) a paper towel (b) a steel spoon (c) a sugar cube (d) a cotton thread
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
16. 16.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
17. 17.⚖️ 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 kind of flower (b) the amount of colour (c) the length of the stem (d) time for colour to show
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a balloon (c) food colour (d) a few hours of waiting
19. 19.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the length of the stem (c) the amount of colour
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a magnet (d) a glass of water
23. 23.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
24. 24.⚖️ 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) True (b) False
25. 25.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a flower stem (b) a steel spoon (c) a strip of cloth (d) a cotton thread
27. 27.True or false: a flower stem does not let water climb. (a) False (b) True
28. 28.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) turmeric powder (d) a few hours of waiting
31. 31.💧 Which of these does not let water climb? (a) a strip of cloth (b) a cotton thread (c) a rubber eraser (d) a piece of chalk
32. 32.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of chalk (c) a cotton thread (d) a strip of cloth
34. 34.True or false: a cotton thread lets water climb up it. (a) True (b) False
35. 35.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a few hours of waiting (d) a white flower
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.🔮 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 turn two colours (d) they all turn green
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) time for colour to show (c) the room it stands in
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) food colour (d) a mirror

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