Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 991 · 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.True or false: a balloon is not needed for the coloured flower experiment. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) a plastic ruler (b) a piece of foil (c) a piece of chalk (d) a glass marble
3. 3.🔮 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 all turn green (d) they stay white
4. 4.🔍 Which is the odd one out? (a) a piece of chalk (b) a cotton thread (c) a plastic ruler (d) a strip of cloth
5. 5.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
6. 6.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
7. 7.⚖️ 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
8. 8.True or false: a plastic ruler does not let water climb. (a) False (b) True
9. 9.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
10. 10.💧 Which of these does not let water climb? (a) a plastic ruler (b) a cotton thread (c) a flower stem (d) a paper towel
11. 11.🔍 Which is the odd one out? (a) a strip of cloth (b) a flower stem (c) a piece of chalk (d) a rubber eraser
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a balloon (d) a magnet
13. 13.🌼 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
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a mirror (c) a balloon (d) a white flower
15. 15.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a cotton thread
17. 17.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a cotton thread
20. 20.🔍 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 stem turns to ice (d) the petals turn bluish
21. 21.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
24. 24.True or false: a piece of chalk does not let water climb. (a) False (b) True
25. 25.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
27. 27.💧 Which of these does not let water climb? (a) a paper towel (b) a flower stem (c) a piece of foil (d) a sugar cube
28. 28.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a few hours of waiting (d) a mirror
30. 30.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) yeast (d) food colour
31. 31.⚖️ 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) the kind of flower (c) the amount of colour (d) time for colour to show
32. 32.True or false: a steel spoon does not let water climb. (a) False (b) True
33. 33.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) turmeric powder (c) a white flower (d) a few hours of waiting
34. 34.⚖️ 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 room it stands in (c) the length of the stem
35. 35.⚖️ 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
36. 36.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
38. 38.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Do we need yeast for the coloured flower experiment? (a) not needed (b) needed

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