Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 67 · 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? True or false: the kind of flower is the one thing we change. (a) False (b) True
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
3. 3.⚖️ 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
4. 4.⚖️ 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 length of the stem (b) time for colour to show (c) the amount of colour (d) the room it stands in
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) food colour (d) a mirror
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) it sinks at once (d) colour climbs up it
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a white flower (d) a balloon
9. 9.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
10. 10.💧 Which of these lets water climb up it? (a) a piece of foil (b) a strip of cloth (c) a glass marble (d) a steel spoon
11. 11.🔍 Which is the odd one out? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a cotton thread
12. 12.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
13. 13.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) the stem is hot (c) petals like colour (d) petals are magnetic
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they stay white (d) they all turn green
15. 15.💧 Which of these lets water climb up it? (a) a paper towel (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
16. 16.True or false: a paper towel does not let water climb. (a) True (b) False
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.🛟 What should you do after handling food colour? (a) wash your hands (b) rub your eyes (c) wipe them on walls (d) lick your fingers
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a white flower (d) food colour
20. 20.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
21. 21.⚖️ 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) time for colour to show (b) the kind of flower (c) the amount of colour (d) the length of the stem
22. 22.True or false: a mirror is not needed for the coloured flower experiment. (a) False (b) True
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a balloon (d) a white flower
24. 24.⚖️ 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
25. 25.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
26. 26.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a plastic ruler (c) a sugar cube (d) a steel spoon
27. 27.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
28. 28.True or false: a magnet is not needed for the coloured flower experiment. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a paper towel (d) a piece of chalk
30. 30.True or false: a white flower is needed for the coloured flower experiment. (a) True (b) False
31. 31.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
32. 32.🔍 Which is the odd one out? (a) a glass marble (b) a plastic ruler (c) a sugar cube (d) a steel spoon
33. 33.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a rubber eraser (d) a flower stem
34. 34.⚖️ 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
35. 35.True or false: a cotton thread does not let water climb. (a) True (b) False
36. 36.💧 Which of these does not let water climb? (a) a flower stem (b) a steel spoon (c) a strip of cloth (d) a piece of chalk
37. 37.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
38. 38.⚖️ 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
39. 39.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the petals turn red (c) the flower glows (d) the stem turns blue
40. 40.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting

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