Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 367 · 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.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the room it stands in (c) the length of the stem (d) the amount of colour
2. 2.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) True (b) False
3. 3.🔮 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
4. 4.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
5. 5.True or false: yeast is needed for the coloured flower experiment. (a) False (b) True
6. 6.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) capillary action (d) magnetism
7. 7.🛟 What should you do after handling food colour? (a) wash your hands (b) lick your fingers (c) wipe them on walls (d) rub your eyes
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🛟 Who should trim the flower stem? (a) a pet (b) a toddler (c) anyone, without looking (d) a grown-up
10. 10.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.💧 Which of these lets water climb up it? (a) a piece of foil (b) a cotton thread (c) a steel spoon (d) a glass marble
12. 12.⚖️ 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 length of the stem (c) time for colour to show (d) the amount of colour
13. 13.🧺 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 few hours of waiting
14. 14.True or false: a paper towel does not let water climb. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a piece of foil (d) a rubber eraser
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) it turns to plastic (d) nothing ever happens
18. 18.True or false: a plastic ruler does not let water climb. (a) True (b) False
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.🧺 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 white flower (d) turmeric powder
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
22. 22.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
23. 23.💧 Which of these lets water climb up it? (a) a steel spoon (b) a strip of cloth (c) a rubber eraser (d) a piece of foil
24. 24.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
25. 25.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a glass marble (c) a paper towel (d) a plastic ruler
27. 27.💧 Which of these does not let water climb? (a) a cotton thread (b) a steel spoon (c) a strip of cloth (d) a sugar cube
28. 28.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.⚖️ 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 kept the same. (a) False (b) True
30. 30.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it rains on them (c) it is sprayed on (d) through the air
31. 31.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.True or false: a piece of foil does not let water climb. (a) False (b) True
34. 34.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals like colour (c) petals are magnetic (d) petals lose water to air
35. 35.True or false: a flower stem does not let water climb. (a) True (b) False
36. 36.⚖️ 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
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the water turns green (c) the stem turns to ice (d) the flower floats away
38. 38.⚖️ 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 room it stands in (b) time for colour to show (c) the length of the stem
39. 39.True or false: a balloon is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a strip of cloth lets water climb up it. (a) False (b) True

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